| 单词 | taxonomic |
| 例句 | The real blow came twelve years later, when, as a consequence of a radical taxonomic reshuffle, lepidopterists decided that Pappachi’s moth was in fact a separate species and genus hitherto unknown to science. The God of Small Things 1997-01-01T00:00:00Z Like Darwin, he collected beetles, but he lacked his cousin’s plodding, taxonomic mind and soon gave up his collection for more ambitious pursuits. The Gene 2016-06-02T00:00:00Z However, as the Enlightenment went on in subsequent centuries, categorization of the races became a central taxonomic venture, and this in due course had its effect in sharpening racial attitudes. What is “white supremacy”? A brief history of a term, and a movement, that continues to haunt America 2017-04-23T04:00:00Z Best metal performance might feature the most impressive array of nominees in any single category, though at the risk of being unreasonably taxonomic, not all of them are strictly metal. The Grammy Gems You Won’t Hear on ‘Music’s Biggest Night’ 2018-01-26T05:00:00Z It seems bizarre that we may have a better taxonomic understanding of, say, a wild datura in Central America than a lavender hybrid planted in Silver Spring. Got milkweed? One man’s research efforts into plant biodiversity. Tyson's scientific message is that "counting planets" doesn't really matter; the solar system may be studied through a variety of different taxonomic lenses. Et cetera: Steven Poole's non-fiction choice | Book reviews 2010-04-02T23:06:00Z Beyond that, it robbed biogeography of any kind of generality, because a different story might apply to every taxonomic group. Evolution, but different: Adventures of a Darwin-doubting botanist 2014-01-12T15:00:00Z Some of the most striking pieces have a scientific or taxonomic outlook. In the galleries: Moving toward the transcendental 2015-04-16T04:00:00Z Wheeler, the former keeper of entomology at the Natural History Museum in London, has helped coin the word "cybertaxonomy" to describe new uses of computer science and engineering in programmes of taxonomic research. New species top 10 2010-05-23T16:38:00Z For example, we now know that a spoonful of agricultural soil contains 30,000 taxonomic varieties of microbes. The connection between soil microbiomes and gut microbiomes 2021-07-01T04:00:00Z Yet, as Williams points out, breasts are what make humans unique to any other species: “mammary glands define our entire taxonomic class,” she writes. My boobs, my burden 2014-02-24T01:00:00Z At a time when scientists saw their duty as chiefly taxonomic—stuffing things into ever narrower categories—Humboldt’s genius was to see the interrelatedness of things—in particular the link between plants, climate and geography. Man of the world 2015-11-05T05:00:00Z In his taxonomic history, “The American Cinema,” Andrew Sarris consigned Wellman to the category “Less Than Meets the Eye,” suggesting that he was a hack. William A. Wellman, Two-Fisted Director With Heart, in Six Takes 2017-01-27T05:00:00Z A set that can change locations instantaneously, or costumes that pin down time and class with almost taxonomic exactitude, can anchor while also heightening the illusion of life. On Broadway Stages, the Beautiful Rooms Are Empty 2021-12-30T05:00:00Z The key observation in Wallace’s paper was that close taxonomic connection went hand in hand with close geographic association. Evolution, but different: Adventures of a Darwin-doubting botanist 2014-01-12T15:00:00Z The taxonomic cataloguing of variants on a single theme harks back to his previous series centering on trees and lifeguard towers, and further, to the influence of Karl Blossfeldt and the Bechers. Amir Zaki seeks clarity in photographs 2015-01-17T05:00:00Z In strict taxonomic terms, Wells is the link between the cramped lower-bourgeois interiors of Dickens and Thackeray's early work and Orwell's 1930s fiction. David Lodge on HG Wells 2011-03-11T10:00:01Z “Bridge of Spies” Years ago, Steven Spielberg entered the ranks of Pantheon Directors, to borrow the most exalted category in Andrew Sarris’s taxonomic “The American Cinema” — and there he remains. The Best Movies of 2015 2015-12-09T05:00:00Z Currently there are a number of closely related mushrooms classified under the same species name in both the Old World and the New, a taxonomic combobulation that’s likely to change with advanced DNA sequencing. Don’t shoot me! I’m just picking mushrooms! 2013-09-08T13:30:00Z If Parker's approach to botany had been the same as his approach to his instrument, one dreads to think what might have happened to the Linnaean system of taxonomic classification. Evan Parker's musical utopia 2010-04-22T21:35:00Z Nevertheless, until now, only one species, Minorisa minuta, had been formally described, and the absence of available culture strains hindered taxonomic investigations. Discovery of three novel minorisa species, the smallest predatory marine picoplankton 2023-10-26T04:00:00Z "We have to build communities of specialists for most taxonomic groups of the organisms we're going to collect." Brazil's struggling rainforests are so understudied, it's not clear how bad the damage is 2023-09-03T04:00:00Z Aided by an arsenal of previously published taxonomic and ornithological research, Dr. Stimpson and Dr. Kemp were able to identify the species that had been annotated with triangular tail markings. Put a Bird on It? Ancient Egypt Was Way Ahead of Us. 2023-06-06T04:00:00Z Scientists instead classify bacteria and archaea into taxonomic groups based on similarities in appearance, physiology, and genes.2 Many are given names using traditional Linnean taxonomy, wiith a genus and species. Fundamentals of Biology 2015-01-01T00:00:00Z A genus is a taxonomic rank that includes several similar and related species within it. World History: to 1500 2023-04-19T00:00:00Z The current taxonomic system now has eight levels in its hierarchy, from lowest to highest, they are: species, genus, family, order, class, phylum, kingdom, domain. Concepts of Biology 2013-04-25T00:00:00Z "We have to build communities of specialists for most taxonomic groups of the organisms we're going to collect. I think it's the way we can solve this in a short period of time," he said. Brazil's struggling rainforests are so understudied, it's not clear how bad the damage is 2023-09-03T04:00:00Z Everyone agrees that more research is needed to help the Tully Monster finally find a taxonomic home. Was the Tully Monster a Fish, a Worm, a Giant Slug with Fangs? 2023-04-19T04:00:00Z With the phylogenetic tree and the taxonomic classification system, scientists have grouped and organized organisms by domain, kingdom, phylum, class, order, family, genus, and species. Fundamentals of Biology 2015-01-01T00:00:00Z From a taxonomic point of view, “The Last Animal” is a sweet, poignant descendant of “Jurassic Park.” Review | In ‘The Last Animal,’ a perfectly preserved woolly mammoth brings hope 2023-04-11T04:00:00Z Figure 1.9 This diagram shows the levels of taxonomic hierarchy for a dog, from the broadest category—domain—to the most specific—species. Concepts of Biology 2013-04-25T00:00:00Z Known as an animal “tribe” in taxonomic terms, the group includes a diverse set of snail-eating snakes with habitat throughout Central America. Leonardo DiCaprio names snail-eating snake after his mom 2023-02-04T05:00:00Z Because of their mouths, which are retracted inside their heads, they now make up the majority of a different taxonomic class: entognatha. Why Fly or Swim When You Can Jump? Ask the Springtail. 2022-11-07T05:00:00Z The taxonomic classification system uses a hierarchical model to organize living organisms into increasingly specific categories. Fundamentals of Biology 2015-01-01T00:00:00Z The bloblike animal has defied taxonomic placement for nearly 50 years. The ‘Alien Goldfish’ Finds a Home 2022-09-20T04:00:00Z In addition to the hierarchical taxonomic system, Linnaeus was the first to name organisms using two unique names, now called the binomial naming system. Concepts of Biology 2013-04-25T00:00:00Z The theory also connects this change of a population over time, called microevolution, with the processes that gave rise to new species and higher taxonomic groups with widely divergent characters, called macroevolution. Biology for AP Courses 2022-06-09T00:00:00Z Thylacines are so unlike other animals that they’re in their own taxonomic family, just as dogs are in one family of mammals and cats—from tigers to tabbies—are in another. De-extinction Company Aims to Resurrect the Tasmanian Tiger 2022-08-16T04:00:00Z Illustration shows the taxonomic groups shared by various species. Fundamentals of Biology 2015-01-01T00:00:00Z Paleobiologist Stephan Lautenschlager of the University of Birmingham in England discovered this connection while digging through skull measurements of hundreds of extinct archosaurs—the taxonomic group that includes birds, crocodiles and all of their ancestors. If T. Rex ’s Beady-Eyed Glare Terrifies You, It Should 2022-08-11T04:00:00Z It is a best guess based on the opinions of experts on different taxonomic groups. Concepts of Biology 2013-04-25T00:00:00Z Figure 20.5 The taxonomic classification system uses a hierarchical model to organize living organisms into increasingly specific categories. Biology for AP Courses 2022-06-09T00:00:00Z Yesterday, another group of researchers published the first peer-reviewed rebuttal, a counterattack that sets the stage for what is likely to be a king-size taxonomic debate for years to come. Your Tuesday Briefing 2022-07-26T04:00:00Z This king-size taxonomic debate seems destined to rage for epochs. Splitting T. Rex Into 3 Species Becomes a Dinosaur Royal Rumble 2022-07-25T04:00:00Z The largest and most inclusive traditional taxonomic category is the kingdom. Miller & Levine Biology 2018-01-01T00:00:00Z Finally, the arthropods, one of the most successful taxonomic groups on the planet, are coelomate organisms with a hard exoskeleton and jointed appendages. Concepts of Biology 2013-04-25T00:00:00Z The taxonomic classification system uses a hierarchical model to organize living organisms. Biology for AP Courses 2022-06-09T00:00:00Z This illustration shows the taxonomic groups, in sequence, with examples. Environmental Biology 2018-09-06T00:00:00Z The United States governing body for agriculture, the USDA, uses a taxonomic classification to identify soil types, called soil orders. An Introduction to Geology 2017-01-01T00:00:00Z “Getting at the heart of the issue of how aging evolves can only be done with this broad taxonomic approach.” Centenarian Tortoises May Set the Standard for Anti-Aging 2022-06-23T04:00:00Z The theory also connects this gradual change of a population over time, called microevolution, with the processes that gave rise to new species and higher taxonomic groups with widely divergent characters, called macroevolution. Concepts of Biology 2013-04-25T00:00:00Z The categories in the taxonomic classification system are organized from smaller, more specific categories to larger categories. Biology for AP Courses 2022-06-09T00:00:00Z A similar pattern is observed for most taxonomic groups. Environmental Biology 2018-09-06T00:00:00Z Species identification is therefore an exercise in patience and meticulous taxonomic expertise. The Scientists Fighting for Parasite Conservation 2022-05-18T04:00:00Z Although discoveries of new species of mammals or birds are relatively rare, parasites represent the frontier of taxonomic research, with prodigious amounts of new species described each year. Do species names perpetuate gender bias in science? 2022-05-10T04:00:00Z Recent genetic analysis and other advancements have found that some earlier taxonomic classifications do not reflect actual evolutionary relationships, and therefore, changes and updates must be made as new discoveries take place. Concepts of Biology 2013-04-25T00:00:00Z In the hierarchal model for the taxonomic classification system, from the point of origin, the groups become less specific. Biology for AP Courses 2022-06-09T00:00:00Z Experts evaluated data for 10,196 species in 10 major taxonomic groups of reptiles and assessed their conservation status. News at a glance: A Mars rover’s trek, a collider’s restart, and a funder’s apology 2022-04-27T04:00:00Z Among 10 major taxonomic groups, turtles and their relatives were most commonly at risk of extinction. One in five reptile species is at risk of extinction 2022-04-27T04:00:00Z Bouabré went on to pursue various taxonomic projects, and these make up the rest of the exhibition — the first ambitious survey of his work in North America. Review | MoMA is finally paying attention to great artists from Africa 2022-04-06T04:00:00Z Unlike with a taxonomic classification, a phylogenetic tree can be read like a map of evolutionary history, as shown in Figure 12.4. Concepts of Biology 2013-04-25T00:00:00Z Using the taxonomic classification system, which Kingdom category best describes a bear? Biology for AP Courses 2022-06-09T00:00:00Z Long known from only two decent specimens, Mr. Paul said, Tyrannosaurus rex largely sailed through the decades without major taxonomic revisions. They Want to Break T. Rex Into 3 Species. Other Paleontologists Aren’t Pleased. 2022-02-28T05:00:00Z Since then, more recent research has continued to study how ecosystems, biomes, and taxonomic groups are being affected as the rise in temperatures speeds up. An "emerging crisis": The climate is changing too fast for plants and animals to adapt 2022-02-25T05:00:00Z The paper does not formally describe or give a name to any species in the complex, as such taxonomic work would require more evidence and microscopic measurements of the wasps’ body parts. A Parasitic Wasp Unmasked: One Species Is Actually 16 Species 2022-02-17T05:00:00Z However, today many scientists build phylogenetic trees to illustrate evolutionary relationships and the taxonomic classification system is expected to reflect evolutionary relationships. Concepts of Biology 2013-04-25T00:00:00Z The same is true for higher taxonomic categories. Biology for AP Courses 2022-06-09T00:00:00Z “If you’ve got it wrong, it’ll be decades of public confusion and argument,” Dr. Hone said, which often leads to suggestions that all taxonomic divisions are arbitrary and beloved species don’t exist. They Want to Break T. Rex Into 3 Species. Other Paleontologists Aren’t Pleased. 2022-02-28T05:00:00Z Newmaster asked Thompson to work on a paper comparing the cost of traditional taxonomic typing and DNA barcoding for identifying forest plants. This scientist accused the supplement industry of fraud. Now, his own work is under fire 2022-02-01T05:00:00Z But Dr. Forbes hopes someone will take up the taxonomic mantle and name each of these 16 to 18 long-overlooked wasps. A Parasitic Wasp Unmasked: One Species Is Actually 16 Species 2022-02-17T05:00:00Z List the different levels of the taxonomic classification system. Concepts of Biology 2013-04-25T00:00:00Z It is a best guess based on the opinions of experts in different taxonomic groups. Biology for AP Courses 2022-06-09T00:00:00Z He travels around the world using conventional approaches to sample insects and create taxonomic reference libraries—the kind of material that will be vital to understanding the genetic snippets from eDNA samplers. DNA in Air Can Catalog Hidden Insects All Around Us 2021-12-16T05:00:00Z “It’s universal across geographic locations, from the tropics to the poles, and it’s universal across the taxonomic groups, from little zooplankton or phytoplankton to large whales and sharks.” The Ups and Downs of a Great Vertical Migration 2021-12-06T05:00:00Z Distinguishing dozens of identical-looking wasps from the slush of a single species is not just a taxonomic exercise. A Parasitic Wasp Unmasked: One Species Is Actually 16 Species 2022-02-17T05:00:00Z One of the oldest observed patterns in ecology is that biodiversity in almost every taxonomic group of organism increases as latitude declines. Concepts of Biology 2013-04-25T00:00:00Z Higher taxonomic levels, such as genera and families, can also be endemic. Biology for AP Courses 2022-06-09T00:00:00Z As a taxonomic group, fungi are both ubiquitous and diverse, including molds, yeast, mushrooms, and a variety of other organisms. Flora, fauna, and … funga? The case for a third "F" 2021-09-07T04:00:00Z But the genetic analysis also led the scientists into a taxonomic minefield. China’s most mysterious wildcat may not be its own species 2021-06-23T04:00:00Z It is not common taxonomic practice to describe a new species from a single, imperfect specimen. These Brittle Stars Have Thousands of ‘Pig Snouts’ on Each Arm 2021-06-16T04:00:00Z Living collections were often presented in taxonomic order, with various species of the same family grouped together, for comparative study. Opinion | Modern Zoos Are Not Worth the Moral Cost 2021-06-11T04:00:00Z One of the oldest observed patterns in ecology is that species biodiversity in almost every taxonomic group increases as latitude declines. Biology for AP Courses 2022-06-09T00:00:00Z Frequently, this investigative research only points to a group of suspected species, possibly a few most likely genera or, more often, an entire taxonomic order. Finding Conclusive Animal Origins Of The Coronavirus Will Take Time 2021-06-09T04:00:00Z "The same model may be adopted to other geographic regions and may certainly apply to other taxonomic groups." We need to talk about spider conservation 2021-05-23T04:00:00Z But despite any challenges that might come in determining a species' taxonomic moniker, picking the right name can have conservation benefits. Decolonizing species names 2021-02-16T05:00:00Z The Nagoya Protocol allows each signatory country to define what constitutes use of genetic resources; Spain says the EU legislation that enforces the Nagoya Protocol does not apply to taxonomic studies such as Doménech’s. Illicit centipede raises thorny question: Should journals have refused to publish a paper about it? 2021-02-10T05:00:00Z Shared ancestry is indicated by taxonomic classification in which a family of organisms contains many genera, and within each genus there are many species. Biology for AP Courses 2022-06-09T00:00:00Z Recombination might also allow two different coronaviruses from the same taxonomic group to swap some of their genes. The Coronavirus Is a Master of Mixing Its Genome, Worrying Scientists 2021-02-05T05:00:00Z One of the challenges of studying the evolutionary history of any species is understanding physical variation within and among taxonomic groups. The Real Dilophosaurus Would Have Eaten the Jurassic Park Version for Breakfast 2020-12-15T05:00:00Z Even beyond that challenge, purposefully identifying taxonomic names based on more culturally relevant identifiers poses a few problems. Decolonizing species names 2021-02-16T05:00:00Z My uncle, who has lived in Los Angeles for 40 years, might now understand in a purely taxonomic sense that he is “Asian,” but he would laugh at the idea of “people of color.” Opinion | ‘People of Color’ Do Not Belong to the Democratic Party 2020-11-20T05:00:00Z Scientists historically organized Earth’s millions of species into a hierarchical taxonomic classification system from the most inclusive category to the most specific: domain, kingdom, phylum, class, order, family, genus, and species. Biology for AP Courses 2022-06-09T00:00:00Z To assume near-identical viruses were infecting all the cells studied in this report would imply that some viruses are capable of infecting organisms from different phyla, the taxonomic rank just below kingdom, the authors say. Viruses Can Be Delicious as Well as Deadly 2020-11-11T05:00:00Z In many cases, Wright points out, Indigenous name usage has long outlasted multiple taxonomic reclassifications. Change Species Names to Honor Indigenous Peoples, Not Colonizers, Researchers Say 2020-11-03T05:00:00Z That sort of taxonomic specificity is very, very important. Weird Mystery Seeds Arriving by Mail Sprout Biodiversity Concerns 2020-08-05T04:00:00Z Virologists currently name species — the most basic taxonomic rank — in several ways, often on the basis of where the virus is found, the animals that host it or the disease it causes. Virologists divided over plans to change virus-naming rules during the pandemic 2020-07-29T04:00:00Z Unlike a taxonomic classification diagram, a phylogenetic tree can be read like a map of evolutionary history. Biology for AP Courses 2022-06-09T00:00:00Z As a result, conservation organisations, national governments and scientists often use separate lists of mammals, fungi and other organisms with differing taxonomic descriptions. Scientists put forward plan to create universal species list 2020-07-07T04:00:00Z He included a thread from the Twitter Communications team labeled “Bot or not?” that walked through the taxonomic nuances. Who’s a Bot? Who’s Not? 2020-06-16T04:00:00Z Predators in the Southern Ocean include a large range of species from across different taxonomic groups. Predators on track for ocean protection around Antarctica 2020-03-17T04:00:00Z “From a taxonomic point of view, it’s so related to the previous virus, it needs to be included in its name.” Coronavirus came from bats or possibly pangolins amid ‘acceleration’ of new zoonotic infections 2020-02-07T05:00:00Z Historically, organisms were organized into a taxonomic classification system. Biology for AP Courses 2022-06-09T00:00:00Z There is currently no universally accepted way to resolve taxonomic disputes about species classifications, resulting in competing lists of organisms. Scientists put forward plan to create universal species list 2020-07-07T04:00:00Z Their names suggest a kind of taxonomic poetry, a nature music. Making America great again in a new Wild West 2020-01-21T05:00:00Z He named the project Linnaeus, for the Swedish botanist who devised the taxonomic system. Jonathan Ledgard Believes Imagination Could Save the World 2019-09-16T04:00:00Z The raft probably increases the longevity and distance of certain taxonomic groups. Don’t Believe the Hype: The Pumice Raft Won’t Save the Great Barrier Reef 2019-08-30T04:00:00Z The taxonomic classification system uses a hierarchical model to organize living organisms. Biology for AP Courses 2022-06-09T00:00:00Z “I don’t know of any other method that is so broad that you can actually get information from across the taxonomic tree of life, all the way from bacteria to whales,” says Thomsen. Turning discarded DNA into ecology gold 2019-06-24T04:00:00Z One of its biggest initial revelations was that the taxonomic composition of the microbiota in the human body was not a reliable predictor of host phenotype, such as disease susceptibility. After the Integrative Human Microbiome Project, what’s next for the microbiome community? 2019-05-28T04:00:00Z The sculpted, exquisitely precise forms of all these fossils belie their frustrating taxonomic ambiguity. What the Heck Are These Fossils? 2019-05-26T04:00:00Z There is even a reasonable primer in taxonomic practices thrown in for good measure. Learning about Critical Thinking from Kitty Claws and Ice Cream Cones 2019-05-11T04:00:00Z Thousands of specimens collected through the slave trade still reside in places such as the Natural History Museum in London, and they're still used in genetic and taxonomic research. Historians expose early scientists’ debt to the slave trade 2019-04-04T04:00:00Z For one, taxonomic specialists are still required to build the reference databases against which eDNA is matched to identify species. Turning discarded DNA into ecology gold 2019-06-24T04:00:00Z For one thing, tsetse fly eradication is not about getting rid of a single species—but rather an entire taxonomic family called Glossinidae, with 31 species and subspecies across Africa. Should We Kill Off Disease-Causing Pests? Not So Fast 2019-02-20T05:00:00Z This platform could incorporate cutting-edge taxonomic methodologies and increase the efficiency of submitting proposals that are based on massive amounts of data. Classify viruses — the gain is worth the pain 2019-02-19T05:00:00Z Wilson began his career as a taxonomic entomologist, studying ants. The Insect Apocalypse Is Here 2018-11-27T05:00:00Z Scientists still consult them to construct phylogenies and do taxonomic work: Many of the collections contain type specimens, the first described individual of a species against which all other individuals are compared. Historians expose early scientists’ debt to the slave trade 2019-04-04T04:00:00Z These techniques have enabled eDNA surveys to become more innovative and ambitious in their scope, opening up a whole range of taxonomic groups across large geographical regions for study. Turning discarded DNA into ecology gold 2019-06-24T04:00:00Z For example, researchers could select all species within particular taxonomic group, which could inform understanding of their evolution. Researchers launch plan to sequence 66,000 species in the United Kingdom. But that’s just a start 2018-11-01T04:00:00Z Higher taxonomic ranks of RNA viruses can be established on the basis of a phylogeny of a universal marker. Classify viruses — the gain is worth the pain 2019-02-19T05:00:00Z Their exact taxonomic designations—whether they were separate species or subspecies—is still a matter of scientific debate. When a Neandertal Fell for a Denisovan, What Happened Was Only Human 2018-08-22T04:00:00Z However, she adds that smaller taxonomic groups like the murres and their relatives “do not always follow the rules that emerge at the global scale.” These eggs are putting a new spin on how shells get their shape 2018-08-22T04:00:00Z “Homosexual” may have given a new pseudoscientific taxonomic category to the language, but it didn’t alter the condition of desire. What Can We Learn from Utopians of the Past? 2018-07-23T04:00:00Z As with EBP, however, Sanger’s first phase will aim to collect and sequence one representative from each of the 3849 taxonomic families found in the British Isles. Researchers launch plan to sequence 66,000 species in the United Kingdom. But that’s just a start 2018-11-01T04:00:00Z Most taxonomic groups are made up of lineages with both low and high speciation rates. Speciation far from the madding crowd 2018-07-03T04:00:00Z In these cases the genus name gets thrown in the taxonomic dustbin while the species name often persists. Paleo Profile: The Nonsense Beetle 2018-06-10T04:00:00Z So… standard annual procedure here is to then compile a list of the year’s articles, and to then see how things fared as goes taxonomic representation. It Was the 12th Year of Tet Zoo 2018-05-28T04:00:00Z He and his colleagues compiled data on size and number of eggs for 342 species across various taxonomic groups. Should ‘superspawners’ stir up fisheries management? 2018-05-10T04:00:00Z But Fred Allendorf, a conservation geneticist at the University of Montana in Missoula, believes “you shouldn’t be describing units of conservation, or any taxonomic group, on the basis of a single gene.” Salmon spawn fierce debate over protecting endangered species, thanks to a single gene 2018-05-04T04:00:00Z As anyone familiar with the British dinosaur literature will know, the species discovered and described here during Victorian times are all too frequently embroiled in what can best be described as hideously complex taxonomic messes. The Making of Dinosaurs of the Isle of Wight 2018-04-22T04:00:00Z There are entire tomes filled with regulations about proper taxonomic protocol, with biologists of various sorts navigating those rules in the hopes that their name will be both evocative and lasting. Paleo Profile: The Nonsense Beetle 2018-06-10T04:00:00Z It can be infuriating, being forced to sweat the finest taxonomic distinctions among our nation’s unlimited variety of lethal weapons. Perspective | The NRA and its allies use jargon to bully gun-control supporters 2018-03-06T05:00:00Z This means resisting the snap judgment and the taxonomic impulse. The male glance: how we fail to take women’s stories seriously 2018-03-06T05:00:00Z Few scientists are willing to do time-consuming taxonomic surveys, for example, because these will not generate highly cited publications. Quest for publication metrics undermines regional research 2018-02-06T05:00:00Z And navigating that taxonomic nest is no simple task. A Point about Horned Dinosaurs 2018-02-03T05:00:00Z Without reliable taxonomic information, it is impossible to be sure which exact species a researcher studied. Most insect studies lack crucial species information 2018-02-01T05:00:00Z Families are the taxonomic group above the genus level and the eukaryotes comprise roughly 9,300 of them. Sequencing the world 2018-01-23T05:00:00Z Faced with a woman’s story, we’re overtaken with the swift taxonomic impulse an amateur astronomer feels on spotting Sirius: “There it is!” he says, and looks to the next star. The male glance: how we fail to take women’s stories seriously 2018-03-06T05:00:00Z Indeed, a taxonomic system that recognises these major lizard groups as ‘families’ and separate from the super-inclusive Iguanidae of tradition probably best reflects their distinct nature, and phylogenetic history. The Tropidurine Treerunners 2017-12-09T05:00:00Z Yet such simple patterns are rare at the higher taxonomic levels that Van Valen studied to develop the law of constant extinction. A tip of the hat to evolutionary change To calculate the approximate branch length corresponding to each taxonomic level, we found the lowest common ancestor for each group and calculated the maximum tip-to-tip distance in that subtree. A communal catalogue reveals Earth’s multiscale microbial diversity 2017-10-31T04:00:00Z A renaissance of taxonomic research would accelerate the effort to discover, describe, and conduct natural history studies for every one of the 8 million living species estimated to exist, but still unknown to science. First Half-Earth Day Offers a Chance to Halt Species Extinction 2017-10-23T04:00:00Z In DNA searches across Domain Bacteria, they found genes similar to the ones Amoebophilus uses to build its guns in six different bacterial phyla, the high-level taxonomic ranking just below kingdom. Bacteria Stab Amoebas to Escape Being Eaten 2017-10-09T04:00:00Z In picking taxonomic names, Agnarsson said, it was the job of scientists to recognize leaders who drew attention to environmental and social issues. Meet Bernie Sanders’s new namesake: A spider from Cuba 2017-09-26T04:00:00Z At lower taxonomic levels, complete ecological replacement of one species or genus with another is common — at higher taxonomic levels it is not. A tip of the hat to evolutionary change As an example, we applied a Shannon entropy analysis to tag sequences and higher taxonomic groups to measure biases in the distribution of taxa. A communal catalogue reveals Earth’s multiscale microbial diversity 2017-10-31T04:00:00Z The Chinese typewriter was the outcome of a process that required both a technological rethinking of the alphabetic typewriter and a taxonomic reordering of the Chinese language. History of technology: How China sidestepped QWERTY : Nature : Nature Research 2017-09-12T04:00:00Z We therefore suggest that, instead of listing and protecting species names, conservation should introduce the practice of referencing the taxonomic treatments used to apply the names to specific taxon concepts. Taxonomy: stable taxon boundaries : Nature : Nature Research 2017-08-08T04:00:00Z Conservation policies should be embracing the insights into evolutionary history revealed by the refinement of taxonomic knowledge. Taxonomy: refine rather than stabilize : Nature : Nature Research 2017-07-11T04:00:00Z This difference in the nature of evolutionary trajectories at different taxonomic levels highlights one of the challenges of studying evolution, which is the hierarchical structure of the evolutionary process10. A tip of the hat to evolutionary change Instead of understanding flora and fauna in taxonomic units as other scientists did, Humboldt saw nature as a living organism pulsating with life. 'I was hooked for life': science writers on the books that inspired them 2017-07-10T04:00:00Z That challenge led to fascinating taxonomic innovations aimed at efficiency. History of technology: How China sidestepped QWERTY : Nature : Nature Research 2017-09-12T04:00:00Z This seal – represented by a fragmentary skull discovered in the 1920s and as yet lacking a taxonomic name – is not especially big and was probably similar in size to a modern grey seal. Incredible Elephant Seals, Part 2 2017-07-03T04:00:00Z However, calls to restrict “freedom of taxonomic action” will not be enthusiastically adopted by all taxonomists, nor would a bottleneck resulting from a prolonged endorsement of new species be acceptable. Taxonomy: swallow the costly medicine : Nature : Nature Research 2017-06-27T04:00:00Z It is then up to the taxonomic community to test and accept or refute these hypotheses. Taxonomy: retain scientific autonomy : Nature : Nature Research 2017-06-27T04:00:00Z Continued integration of conservation assessments with taxonomic accounts is a straightforward mechanism for peer review. Taxonomy: avoid extra bureaucracy : Nature : Nature Research 2017-06-27T04:00:00Z Although a species' taxonomic status is crucial to its conservation status and the data on populations and threats are assessed by strict criteria, no guidelines for species circumscription exist. Taxonomy: use the red list as a registry : Nature : Nature Research 2017-06-27T04:00:00Z Now that this is more common, the taxonomic community must safeguard the system from abuse. Nomenclature: Rules for new species from live specimens : Nature : Nature Research 2017-06-06T04:00:00Z Fortunately, a model for effective and respected taxonomic governance exists. Taxonomy anarchy hampers conservation Instead of more governance concerning the 'why', I recommend putting more emphasis on the 'how' of presenting taxonomic hypotheses. Taxonomy: retain scientific autonomy : Nature : Nature Research 2017-06-27T04:00:00Z In our view, however, their proposal would create unnecessary bureaucracy, be difficult and resource-intensive to apply across all taxonomic groups, and stifle scientific progress in the provision of data on species diversity and distribution. Taxonomy: avoid extra bureaucracy : Nature : Nature Research 2017-06-27T04:00:00Z So, to sort through the growing taxonomic tangle, Seeley proposed that the major groups of dinosaurs be separated from each other on the basis of their hips. Shaking the Dinosaur Family Tree 2017-05-28T04:00:00Z For the sake of the international biodiversity community, we urge authors of taxonomic papers to lodge and update their DNA sequences and the associated taxonomic information in the relevant databases. Molecular taxonomy: Species disconnected from DNA sequences : Nature : Nature Research 2017-05-23T04:00:00Z Third, the taxonomic commission needs to establish subcommittees for agreed subsets of life, such as amphibians or arachnids. Taxonomy anarchy hampers conservation In late 2015, an international group of researchers reported that nearly one-third of cactus species were at risk of extinction, making cactuses “among the most threatened taxonomic groups assessed to date.” As rains ease in the West, cactuses shine brighter than ever 2017-05-12T04:00:00Z To the creative mind, this incredible versatility represents a wonderful polyphony; to the rational mind, chaos; to an inquiring Victorian scientist, the opportunity for a taxonomic field day. The 100 best nonfiction books: No 65 – Thesaurus by Dr Peter Mark Roget (1852) 2017-05-01T04:00:00Z All of this taxonomic wrangling is about more than names. Shaking the Dinosaur Family Tree 2017-05-28T04:00:00Z Moreover, its appearance is close enough to other species that it’s hard to confirm those few sightings are True’s as opposed to some other whale in its taxonomic family. Watch the first underwater video of this rare whale 2017-03-07T05:00:00Z These subcommittees would review taxonomic papers for compliance with agreed standards. Taxonomy anarchy hampers conservation Maple has written, critically, of “taxonomic élitism” in zoos, but, in an apparent attempt to diminish the act of snake-killing, he described the pythons to me as slithery and mean. Killing Animals at the Zoo 2017-01-08T05:00:00Z And so the taxonomic order Cetartiodactyla was named, amalgamating deer and dolphins. How did the whale get its “moustache”? | Elsa Panciroli 2016-11-29T05:00:00Z All taxonomic systems seemed unstable in the wake of evolutionary theory — to say nothing of the threat to human exceptionalism. History: Untangling Alice : Nature : Nature Research 2016-11-15T05:00:00Z It is taxonomic convention when describing a new species to deposit type specimens in a publicly accessible collection. Taxonomy: Preserve specimens for reproducibility : Nature : Nature Research 2016-11-08T05:00:00Z Fourth, the taxonomic commission also needs to establish a judicial committee. Taxonomy anarchy hampers conservation But as scientists got better at studying the genes and behaviors of different animal groups, they found a need for one more official taxonomic distinction: the subspecies. Giraffes aren’t just giraffes. Turns out there are four species. 2016-09-09T04:00:00Z “For example, we resolve the often-used 'other coral' categories into their proper taxonomic types, and also include sponges, macroalgae and seagrass in our predictions,” he says. Computers on the reef 2016-08-30T04:00:00Z But he and his colleagues determined that Zenkerella is actually a member of a separate taxonomic family, indicating that the flight membrane evolved after the group branched off into its own lineage. Scientists finally found Zenkerella, the world’s most mysterious mammal 2016-08-16T04:00:00Z First, the patterns we report here do not necessarily extend to taxonomic groups that haven't been monitored. Biodiversity: The ravages of guns, nets and bulldozers 2016-08-09T04:00:00Z Reviewers of taxonomic papers tend to comment on the techniques used to evaluate organisms, rather than on definitions. Taxonomy anarchy hampers conservation Convention demands a reference sample called a holotype in exchange for a formal taxonomic listing, but — disaster! — the fly escaped before it could be killed and immortalized. Gotta name them all: how Pokémon can transform taxonomy 2016-07-18T04:00:00Z Mr. Wang’s taxonomic gesture seems to have irritated China’s vigilant propaganda bosses, who have moved fast to block references to the “Xi beetle” from China’s heavily censored internet. Beetle Is Named in Honor of Xi Jinping, but China Aims to Squash the News 2016-07-12T04:00:00Z This change in energy content correlated with shifts in taxonomic composition21. A microbial perspective of human developmental biology : Nature : Nature Publishing Group 2016-07-05T04:00:00Z Spore-forming bacteria were cultured from each donor and a taxonomic classification was assigned as described in the main text. Culturing of ‘unculturable’ human microbiota reveals novel taxa and extensive sporulation : Nature : Nature Publishing Group 2016-05-03T04:00:00Z All plant materials from the Deadwood Chinatown District will be incorporated into the Black Hills State University herbarium database, including photographic images, taxonomic identifications, and collection data. Exploring Deadwood’s Chinatown through botany 2016-05-09T04:00:00Z Even worse than this taxonomic deficit is our grasp of natural history. Natural history: Restore our sense of species 2016-05-07T04:00:00Z “Everything we do in biology is built on taxonomic work, and much is left to be done,” McGlynn says. It's Almost Tax Day: Here's How Nature Files Its Taxas A strong effect of chronological age was observed on the taxonomic composition of the oral microbiota. A microbial perspective of human developmental biology : Nature : Nature Publishing Group 2016-07-05T04:00:00Z Spore-forming bacteria were cultured from each donor and a taxonomic classification was assigned as described in the main text. Culturing of ‘unculturable’ human microbiota reveals novel taxa and extensive sporulation : Nature : Nature Publishing Group 2016-05-03T04:00:00Z The committee also labels flowers and shrubs with taxonomic names, as in a botanical garden. River Towers, just south of Old Town Alexandria, is a hidden-away gem 2016-03-31T04:00:00Z In order for it to happen, a researcher needs to be an expert on the genus that the species falls under and then needs to publish a taxonomic revision in a science journal, he said. Virginia Tech bug man is ‘always looking at the ground’ 2016-03-26T04:00:00Z In total, the scientists looked at nearly 3,000 specimens – the most comprehensive taxonomic tarantula study ever conducted. Life ain't easy for a spider named Johnny Cash 2016-02-05T05:00:00Z Detection is more common in meconium from neonates who are born before 33 weeks of gestation, and there is considerable taxonomic overlap with the microbes found in the amniotic fluid25, 45. A microbial perspective of human developmental biology : Nature : Nature Publishing Group 2016-07-05T04:00:00Z The identification of these new and unexpected spore-formers highlights the broad taxonomic distribution of this phenotype among the enteric species of the Firmicutes. Culturing of ‘unculturable’ human microbiota reveals novel taxa and extensive sporulation : Nature : Nature Publishing Group 2016-05-03T04:00:00Z The large-eyed harvestman's toothless mouth pincers also confirm it belongs to a rarely collected type of harvestman that was recently snipped from one family tree branch and grafted onto another, a major taxonomic shake-up. Fossil Daddy Longlegs Sports a 99-Million-Year Erection 2016-02-01T05:00:00Z Previously classified as fungi because of their appearances and nature, slime molds broadly encompass about 1,000 species in two or three taxonomic groups in the protoctista kingdom. 'Creeping Garden' documentary covers slime mold with style instead of substance 2015-10-27T04:00:00Z They belong to an entirely separate taxonomic group from snow leopards and “regular” leopards, such as African and Indian leopards. As Tiger Numbers Dwindle, Will Smugglers Target a Different Cat? 2015-10-26T04:00:00Z With the commercialization of cannabis already well underway in California, Colorado, Washington and other states, and its medicalization advancing worldwide, governments and the scientific research community are facing rising demands for taxonomic clarity. Is marijuana a single species?: While you’re searching for the perfect high, scientists go deeper 2015-09-28T04:00:00Z Lines domesticated by humans may also have mixed with wild plants, blurring the taxonomic boundaries further. Botany: The cultivation of weed : Nature : Nature Publishing Group 2015-09-22T04:00:00Z At the heart of the debate is a concept called "taxonomic inflation," or the massive influx of newly recognized species and subspecies. To save big cats from extinction, scientists say we need to redefine ‘tiger’ 2015-06-26T04:00:00Z This taxonomic crisis was exposed in the assessments prepared by the International Union for Conservation of Nature and published in 2014 in the European Red List of Bees2. Entomology: The bee-all and end-all : Nature : Nature Publishing Group 2015-05-19T04:00:00Z The researchers speculate that these legless burrowing beasts, in a taxonomic group called Amphisbaenia, in the were able to thrive while others died since they feast on dead and decaying matter. Worm Lizards Floated Their Way Around the World 2015-04-08T04:00:00Z Palaeontologists eventually agreed that Brontosaurus is properly called Apatosaurus, under taxonomic rules drafted by the eighteenth-century Swedish systematist Carl Linnaeus and still in use today. Beloved Brontosaurus makes a comeback 2015-04-06T04:00:00Z As academic and commercial interest grows, governments and the research community will encounter a rising demand for taxonomic information to help resolve disputes, establish registered cultivars, and create reliable centralized databases of cannabis information. Botany: The cultivation of weed : Nature : Nature Publishing Group 2015-09-22T04:00:00Z As befits a crew with such wide-ranging, taxonomic interests, Future Brown enlists an eclectic array of collaborators to act out its border-crossing fantasies. The Musical Dangers of Globalization 2015-03-23T04:00:00Z The agency is basing its proposed changes on recommendations made by taxonomic review groups of wildlife experts culled from DEEP, universities, and nonprofit groups with field experience in the affected species. With fungal disease, state mulls ‘endangered’ tag for bats 2015-03-22T04:00:00Z Their microbiome harbors incredibly high taxonomic diversity, indicating great ecosystem stability and flexibility. Hunter–Gatherers Have Diverse Gut Microbes 2015-03-11T04:00:00Z A diverse family of awesome animals that deserved their own distinct taxonomic group - which he named Dinosauria. The man who invented the dinosaur 2015-02-25T05:00:00Z The few museums that get significant numbers of research grants have shifted their science focus to molecular techniques, which are better funded than more traditional taxonomic approaches. Museums: The endangered dead 2015-02-17T05:00:00Z Bickham believes that many deep-sea species may turn out to be species complexes—a suite of species, similar in appearance but in fact unique, could masquerade as a single one in taxonomic lists. Genetic Flotsam Offers Clues to Ocean Biodiversity 2015-02-03T05:00:00Z That was the taxonomic equivalent of a bad tattoo. In Search of Hispaniola’s Mystery Toad 2015-01-07T05:00:00Z Interestingly, bacterial taxonomic abundance is different in Hadza men and women. Hunter–Gatherers Have Diverse Gut Microbes 2015-03-11T04:00:00Z The males presumably use these bone-spears to fight, and perhaps as a result, males in this taxonomic group are bigger than females— a reversal of the gender-size pattern in most other frogs. World’s Only Tadpole-Birthing Frog Discovered in Indonesia Museum staff and researchers have a name for the barriers that slow down species discovery: the taxonomic impediment. Museums: The endangered dead 2015-02-17T05:00:00Z Conventional methods require the collection of samples around offshore facilities, followed by sieving, manual sorting and time-consuming visual identification by taxonomic experts. Genetic Flotsam Offers Clues to Ocean Biodiversity 2015-02-03T05:00:00Z A number of writers have observed that what made Between Pacific Tides revolutionary was that its organization is ecological rather than taxonomic: it categorizes animals according to habitat, not phylum or family. In retrospect: Between Pacific Tides : Nature : Nature Publishing Group 2014-12-16T05:00:00Z The Penn State researcher says it is likely in the same genus, or taxonomic grouping, as the more well-known “zombie fungus,” known as Ophiocordyceps. Queen-Ant-Killing ‘Zombie Fungus’ Discovered By Undergrad "Perhaps, what we are looking at are just growth series differences, rather than species or taxonomic differences. " Dinosaur titan's big bone haul 2014-09-04T04:00:00Z And one measure of the taxonomic impediment is the lag time — the gap between when a new species is first collected and when it is identified. Museums: The endangered dead 2015-02-17T05:00:00Z The system used to group every life form on Earth encompasses several levels, or taxonomic ranks. Deep sea 'mushroom' is a breed apart 2014-09-03T04:00:00Z It is the only representative of an entire taxonomic group, resembling something between a small heron and a rail. The 100 most uniquely rare birds 2014-04-10T16:31:01Z We think of wildebeest as a ‘poor’ group in taxonomic terms, since there are only two generally recognised named species, both included in the same genus. Reasons for Really Liking Wildebeest 2014-02-26T14:29:14Z Between 35 million years ago and today, the EQ of Proboscidea—the taxonomic family containing modern elephants and their extinct relatives—increased 10 fold, from 0.2 to greater than 2 for Asian elephants. Searching For The Elephant's Genius Inside the Largest Brain on Land 2014-02-26T13:00:15Z Such careful taxonomic work is required for cataloguing biodiversity and protecting endangered species, says Helgen, who has named more than 30 species from specimens found in collections. Museums: The endangered dead 2015-02-17T05:00:00Z A domain is the highest taxonomic rank and below that is a kingdom. Deep sea 'mushroom' is a breed apart 2014-09-03T04:00:00Z The west African species is still awaiting a new taxonomic species name. New Crocodile Species Discovered in West Africa 2014-02-06T16:00:56Z This variation is consistent with the idea that taxonomic revision of the group is required: the named taxa may not be close relatives at all. Cant get me enough of that sweet, sweet Temnodontosaurus 2014-01-30T22:43:19Z Still, with improvements in DNA isolation and declining sequencing costs, the taxonomic and geographic purview of paleogenomics is expanding at a rapid pace. [Review] A Paleogenomic Perspective on Evolution and Gene Function: New Insights from Ancient DNA 2014-01-23T19:25:19.779Z Sallan says that not only is this finding important for the taxonomic study of sharks, but it is also the only known example of a shark that lived in freshwater but spawned in saltwater. Extinct Freshwater Sharks That Spawned in Saltwater Had Been Mistaken for Separate Species 2014-01-16T15:00:00Z The outcome from his research was that the birds had enough differences from the other subspecies to warrant the Ecuador Amazon to be separated from the taxonomic group. Discovery gives bird 11th hour hope 2013-12-13T01:10:37Z The diminutive bug belongs to the taxonomic grouping Fulgoromorpha, commonly known as the plant hoppers. Tiny Gears Power Leaping Liftoffs 2013-11-13T15:45:03.040Z An 1874 examination of a skull and some skins produced the first of several taxonomic descriptions that were all later disqualified. Beautiful but Rarely Seen Cat Species Photographed in Borneo [Video] 2013-11-07T18:15:05.603Z Fortunately, most species are diverged from a living relative by <50 million years, so it should in principle be possible to generate paleogenomes for a wide taxonomic variety of organisms. [Review] A Paleogenomic Perspective on Evolution and Gene Function: New Insights from Ancient DNA 2014-01-23T19:25:19.779Z The number of species or species richness used for each taxonomic group is indicated in parentheses. The projected timing of climate departure from recent variability 2013-10-11T14:21:04.850Z The fact is that conservation biology suffers from a phenomenon known as taxonomic bias. Why We Don t Need Pandas 2013-09-12T14:18:15.927Z “Global threat assessments for large taxonomic groups is a very inexact science,” says Walter Jetz, an ecologist at Yale University in New Haven, Connecticut. Taxonomy: The spy who loved frogs 2013-09-12T13:50:56.263Z “I know of no other case where a species was delisted because of a taxonomic disagreement.” Grey wolves left out in the cold 2013-09-12T13:50:23.897Z That is, it’s not a taxonomic designation like “Birds” or “Vertebrates”. Yeast: Making Food Great for 5,000 Years. But What Exactly Is it? 2013-09-06T22:15:02.410Z The number of species or species richness used for each taxonomic group is indicated in parentheses. The projected timing of climate departure from recent variability 2013-10-11T14:21:04.850Z Although the new animal is in the taxonomic order Carnivora — a group of mammals that includes cats and dogs — it is not carnivorous because it does not primarily eat meat. Smithsonian unearths a new species of mammal: The olinguito 2013-08-15T20:58:00Z He wanted to see, in other words, whether Taylor's 70-year-old taxonomic decisions were still valid. Taxonomy: The spy who loved frogs 2013-09-12T13:50:56.263Z Every taxonomic question will produce experts with different opinions.” Grey wolves left out in the cold 2013-09-12T13:50:23.897Z The authors suggest that in mammals, such differences, or even using just species’ taxonomic separation instead, would not affect the existence and location of zoogeographic regions. [Technical Comment] Comment on “An Update of Wallace’s Zoogeographic Regions of the World” 2013-07-25T18:25:15.503Z The number of species or species richness used for each taxonomic group is indicated in parentheses. The projected timing of climate departure from recent variability 2013-10-11T14:21:04.850Z One metric of taxonomic productivity is the number of publications and new species described. [Technical Response] Response to Comments on “Can We Name Earth’s Species Before They Go Extinct?” 2013-07-18T17:55:35.987Z In 1954, Robert Inger, a herpetologist at the Field Museum in Chicago, Illinois, published a withering taxonomic review of Philippine amphibians. Taxonomy: The spy who loved frogs 2013-09-12T13:50:56.263Z Mammals that subsist on the social insects are few in number and restricted to the tropics and subtropics, but their taxonomic spread is remarkable. Can Endangered Animals Coexist with Big Ag? [Excerpt] 2013-02-22T19:15:00.507Z There is an additional issue challenging our attempts to define the term “mesopredator”: taxonomic bias. Laikipia Plateau: What is a Mesopredator? 2013-02-17T17:45:00.253Z In the business, this is called Equidae meat, meaning the "taxonomic family of horses and related animals". Horsemeat: EU imports and exports data 2013-02-13T15:58:12Z "Its excellent news, that taxonomic expertise is moving very effectively to tropical countries where most of the biodiversity on Earth is," she said. Most unknown species can be named 2013-01-24T19:09:43Z Recent EST-based studies provide broad taxonomic representation but rely on a limited number of available genes or are forced to accommodate a substantial amount of missing data. Insights into bilaterian evolution from three spiralian genomes 2013-01-23T18:22:45.773Z Certainly, there are myrmecophilous butterflies, bugs, crickets, millipedes, silverfish, spiders; many different taxonomic groups include a myrmecophilous species or two. The Bizarre, Beetle-Biased World of Social Insect Exploitation 2012-12-10T14:45:00.213Z It might be better to compare species in the same taxonomic group with similar genetic material. Comparative biology: Looking for a master switch 2012-12-06T12:21:16.843Z Those belong to a different taxonomic group, Scyphozoa, and tend to spend most of their lives as jellyfish; hydrozoans have briefer medusa phases. Can a Jellyfish Unlock the Secret of Immortality? 2012-11-28T23:26:58Z Passerine means perching, and the members of this broad taxonomic fraternity all take their perching seriously. Basics: Birds Have Natural Ability to Survive Storms 2012-11-12T22:03:26Z Early in his career, Leonard untangled the taxonomic mess of similar-looking, but only distantly related, fungi with multicellular dark spores that were causing disease in grains such as corn. Fungal Meningitis Pathogen Discovers New Appetite for Human Brains 2012-11-12T11:45:00.180Z Biologists currently classify slime molds as protists, a taxonomic group reserved for "everything we don't really understand," says Chris Reid of the University of Sydney. How Brainless Slime Molds Redefine Intelligence 2012-11-07T16:45:02.660Z Genera is the plural of genus, which is the level of taxonomic classification above species. The WEIRD Psychology of Elephants 2012-09-28T17:15:17.447Z He was especially impressed by the phylogenetic tree, the taxonomic diagram that Darwin called the Tree of Life. Can a Jellyfish Unlock the Secret of Immortality? 2012-11-28T23:26:58Z As technology blurred the distinction between what is published and what is not, some predicted online anarchy, with 'taxonomic vandals' taking to the Internet to self-publish reports of new species. The name game 2012-09-12T21:50:02.817Z Ultimately, Yopak and Frank concluded that the brain was “more similar in species with analogous but independently evolved lifestyles than those that shared taxonomic classification.” What Does A Whale Shark's Brain Look Like? (And Why Should We Care?) 2012-08-17T16:15:03.013Z Despite the name, pilot whales, along with killer whales and melon-headed whales, are actually dolphins, members of the taxonomic family Delphinidae. Scientist at Work Blog: Pilot Whales in the Apolima Straits 2012-08-15T11:45:38Z Clinton, who says this is only the fifth specimen known to science and the first live one he has ever seen, has been working on a full taxonomic description of the fish. Kermadecs Islands: Shark fishing with Clinton Duffy 2012-08-13T18:45:00.190Z They are as notable for their taxonomic perfection, Dr. Reeds said, as for Mr. Singer’s technique. | New Jersey: ‘Botanica Magnifica: Photographs by Jonathan Singer’ Is at the New Jersey State Museum 2012-08-04T00:36:04Z Integration of morphological data sets for phylogenetic analysis of Amniota: the importance of integumentary characters and increased taxonomic sampling. Why the world has to ignore ReptileEvolution.com 2012-07-04T11:45:05.397Z White and Naylor stress that molecular techniques are only of one many available tools and should be combined with conventional taxonomic work. Total of 79 Potentially New Shark Species Found 2012-06-25T21:15:00.187Z Thirty-seven species were nowhere to be found, but the researchers pointed out that those bees had been rare to begin with and were often subject to taxonomic confusion. Hive and Seek: Domestic Honeybees Keep Disappearing, but Are Their Wild Cousins in Trouble, Too? [Slide Show] 2012-05-08T21:15:00.240Z In essence, the 16 vanished skink species were kept off the conservation radar because of a taxonomic oversight. Green Blog: A Taxonomic Error, Reversed Decades Too Late 2012-05-02T11:17:39Z A flowering shrub from the Andean cloud forests made taxonomic history last month. Genome Run: Andean Shrub Is First New Plant Species Described by Its DNA 2012-04-24T17:15:00.303Z I’m unsure whether this inflation is due to the flexibility in the definitions, viewing species as lineages or clusters, or the taxonomic practice of the practitioners. Species Concepts 2012-04-20T14:15:03.823Z A comparative study of daily water-intake among certain taxonomic and geographic groups within the genus Peromyscus. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z “It’s really, really different from its next neighbors, both the geographic ones and the taxonomic sister groups.” Green Blog: Meet Madagascar's New Lemur 2012-01-09T12:38:18Z But I have not had opportunity to study all of the reptiles, and I have not had the inclination to solve certain taxonomic problems concerning them. A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico 2011-12-31T03:00:17.400Z Because of the multiplicity of names and the variation in coloration, the small terrestrial Eleutherodactylus in southern M�xico and northern Central America are in a state of taxonomic confusion. Amphibians and Reptiles of the Rainforests of Southern El Peten, Guatemala 2011-12-25T03:00:10.957Z Within the Sorex vagrans complex, the only characters of taxonomic significance that I have detected are in size and color. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Old adults of subater in worn pelage appear grayish, resembling taylori, and at that age, only certain cranial characters are of taxonomic use. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Species were chosen by selecting animals with speaking roles in “Finding Nemo” – hammerhead sharks or sea turtles, for example – and then examining the status of every species in the taxonomic family to which it belongs. Green Blog: Finding Nemo and His Fellow Travelers 2011-12-13T17:06:40Z Nevertheless, such taxonomic changes will not affect the distributional picture presented here. A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico 2011-12-31T03:00:17.400Z So you need to settle a gentleman’s dispute over the taxonomic classification of the shrubbery at your summer cottage at Kennebunkport? Hubble spacecraft gets kindred music; botanical names for all your flora 2011-11-28T15:18:05Z No extensive study of the muscular system was undertaken, but certain muscles know to be of taxonomic importance were studied. Neotropical Hylid Frogs, Genus Smilisca 2011-10-24T02:00:14.853Z The largest single collection of pygmy mice is in the University of Kansas Museum of Natural History, and, unless otherwise indicated, specimens cited in the taxonomic accounts beyond are there. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The first of these two forms is sexual incompatibility—either partial or absolute—between different taxonomic groups. Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection 2011-10-18T02:00:18.363Z In this way, it vaguely seems to them, they are able to save the doctrine of some one mode of origin as appertaining to species, which need not "necessarily" appertain to any other taxonomic division. Darwin, and After Darwin, Volume 2 Post-Darwinian Questions: Heredity and Utility 2011-10-16T02:00:14.153Z We now find that in order to prepare a meaningful account of the herpetofauna of Santa Cecilia, we must complete several taxonomic studies, the limits of which extend far beyond eastern Ecuador. A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus 2011-10-04T02:00:15.227Z These superficial biochemical tests support the arrangement of species as ascertained by conventional taxonomic characters. Neotropical Hylid Frogs, Genus Smilisca 2011-10-24T02:00:14.853Z In order to obtain an accurate understanding of geographic variation in these mice, only adults should be used in making taxonomic comparisons. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z A taxonomic revision of the genus Terrapene was begun in 1956 as an outgrowth of the present study. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Dorsal head shields varied individually and were of no taxonomic importance. A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America) 2011-09-25T02:00:14.967Z In this paper we are presenting a taxonomic review of the genus Osteocephalus; of necessity our study has been at the alpha level. A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus 2011-10-04T02:00:15.227Z In attempting to assay the taxonomic significance of skeletal differences we are faced with a dearth of data on the skeletons of frogs in general and hylids in particular. Neotropical Hylid Frogs, Genus Smilisca 2011-10-24T02:00:14.853Z Length of tail varied more than any other measurement used by me in taxonomic comparisons. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The conformation of the maxillary beak in all species of Terrapene is influenced to a large extent by wear and is of limited value as a taxonomic character. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Although considerable variation in size is observable, little taxonomic use is made of size since sufficient series are not available to determine age classes. A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America) 2011-09-25T02:00:14.967Z Boulenger held a lasting influence on taxonomic herpetology, and his generic synonymy of Osteocephalus was unchallenged until only a decade ago. A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus 2011-10-04T02:00:15.227Z Five academics from refined the number by compiling taxonomic data for roughly 1.2 million known species and identifying numerical patterns. 8.7 million species exist on Earth, study estimates 2011-08-23T21:05:00Z The ceratohyals are highly variable in shape and of little taxonomic use. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z The scientists built a taxonomic pyramid to estimate the total number of species in well-studied groups, like mammals and birds. How Many Species on Earth? It?s Tricky 2011-08-23T22:20:39Z Five academics from Dalhousie University refined the number by compiling taxonomic data for roughly 1.2 million known species and identifying numerical patterns. 8.7 million species exist on Earth, study estimates 2011-08-23T21:05:00Z Sifting through the data, the authors were also surprised to find there was no difference between taxonomic groups: plants move at the same rate as insects, and birds are no faster than mammals. In Warming World, Critters Run to the Hills 2011-08-18T19:01:00Z It’s also a film about the troubled relationship of Homo sapiens to its closest kin, the other species in our taxonomic family, the Hominidae. Dot Earth Blog: Planet of the Hominids 2011-08-11T21:46:15Z They provide characters of taxonomic worth at the level of species and aid in evaluating generic relationships. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z So unusual is their form that scientists are cataloguing the creatures into a completely new taxonomic order. Odd Insect Fossils Suggest Early Carnivorous Lifestyle 2011-07-20T21:45:18.790Z The purpose of the study now reported upon was to determine the present taxonomic status of these animals and the distribution of each within the boundaries of Kansas. Subspeciation in Pocket Gophers of Kansas, [KU. Vol. 1 No. 11] 2011-07-09T02:00:11.847Z The authors sequenced a key genomic region of the bacteria to assess the composition of taxonomic groups. Metagenomics: Movies of the body's bacteria 2011-06-15T17:20:21.957Z Yet if any taxonomic dynasty is entitled to the originalist mantle, to the designation of genuine emblematic earthling animal, and also to brand the rest of us the alien arrivistes, it is the jellyfish. So Much More Than Plasma and Poison 2011-06-06T16:11:53Z Additional specimens are needed from this and closely adjacent areas, especially to the west on the coastal plain, in order to determine more accurately the taxonomic status of the mice there. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z A phylum is just one taxonomic step down from a kingdom. The Evolutionary Tree of Fungi Grows a New Branch 2011-05-11T21:15:00.400Z More reference genomes will facilitate better taxonomic assignment from samples and thus the detection of more low-abundance species. Enterotypes of the human gut microbiome 2011-05-11T17:21:02.573Z The taxonomic status of the red panda, Ailurus fulgens, appears to be less certain. Metabolic Adaptation to Climate and Distribution of the Raccoon Procyon Lotor and Other Procyonidae 2011-05-07T02:00:34.980Z The focus is on diversity, large size, and taxonomic relationships of dinosaurs. Giant Dino exhibit at the American Museum of Nature Science, or, why I should not be a photojournalist 2011-04-16T04:15:00.240Z Myology end serology of the Avian Family Fringillidae, a taxonomic study. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z In a January BioScience paper, he and two co-authors called for the inclusion of more amateurs and laypeople, who are already making substantial taxonomic contributions but whose work is often marginalized by turf-jealous academics. How Much Would It Cost to Identify Every Animal on Earth? 2011-03-04T22:44:55Z “It was not only a very large taxonomic scope, but a very large geographic scope,” Mr. Tingley said. Observatory: Invasive Amphibian Species Upend a Darwin Idea 2011-03-03T17:42:44Z In each case, the solution depended on having precise knowledge—both taxonomic and behavioral — of the species involved, from microbial organisms to mosquitoes. Specimens: How Species Save Our Lives 2011-02-28T12:46:50Z In the accounts beyond, Jones and Byers are mostly responsible for the remarks on natural history, whereas Webb is mostly responsible for the taxonomic comments. Some Reptiles and Amphibians from Korea 2011-01-15T03:00:35.760Z I must confess that it seems to me that one theory is about as "taxonomic" as the other—that both rest on pointing out divergences from a static, "taxonomic" norm. The Value of Money 2011-01-04T03:01:12.363Z Differences in the abundance of the sand shiner in the two rivers are part of taxonomic and distributional studies being conducted by Mr. Bernard C. Nelson. Fish Populations, Following a Drought, in the Neosho and Marais des Cygnes Rivers of Kansas 2011-01-01T03:00:23.470Z Asian elephants and mammoths’ many differences mean that some not only consider the animals distinct species but different genera—another level of taxonomic hierarchy. Genes Separate Africa?s Elephant Herds 2010-12-22T16:20:00Z They reached their conclusion after examining series of data on more than 3,300 invasive species across 10 taxonomic groups - including birds, reptiles, mammals, fungi and plants - in 28 countries around Europe. 'Delayed legacy' of alien species 2010-12-21T02:28:30Z The taxonomic importance of the configurations of the palate was first pointed out by J. de Cornay. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z The show would also teach counting, cognitive skills like logical reasoning — hence the jaunty taxonomic song “One of These Things Is Not Like the Others” — and social skills like cooperation. Gerald S. Lesser, Shaper of ?Sesame Street,? Dies at 84 2010-10-04T06:02:00Z Luckily, there is no taxonomic police force, so there is no obligation to abide by any revision to the name of the famous fly. Taxonomy: Fly in the ointment 2010-04-29T11:22:00Z The discovery is already contributing to the taxonomic arguments so common in anthropology. New species in human lineage's evolution discovered 2010-04-09T04:00:00Z As the taxonomic debate continues, so, too, does fossil hunting at the Malapa site. New Hominid Species, Au. Sediba, Discovered in South Africa 2010-04-08T15:14:00Z Between them arises a median crest, which varies much in extent and composition, and is of considerable taxonomic value. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z The present study was undertaken to determine the variation in both currently used and potential taxonomic characteristics of T. gracilis from one locality. Morphological Variation in a Population of the Snake, Tantilla gracilis Baird and Girard The size and shape of the bill, for example, have been over-emphasized in the past as taxonomic characters. Myology and Serology of the Avian Family Fringillidae A Taxonomic Study It was prepared by a man who at that time lacked much taxonomic experience, and who held to a morphotype concept. Comments on the Taxonomy and Geographic Distribution of Some North American Marsupials, Insectivores and Carnivores In summary: The animals from Mount Rainier, in features of taxonomic import, are almost exactly intermediate between T. a. caurinus and T. a. ludibundus. Comments on the Taxonomy and Geographic Distribution of Some North American Rodents The extent of the origin of this muscle from the sternum, on which it leaves converging, parallel or diverging impressions, is of some taxonomic value. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z Because the number of ridges and amount of convergence of the ridges is not related to size of the scale, it is concluded that these characters are not of taxonomic significance. A New Genus of Pennsylvania Fish (Crossoperygii, Coelacanthiformes) from Kansas Few of the earlier studies were of a quantitative nature, but within the past decade, satisfactory quantitative serological techniques have been developed whereby taxonomic relationships may be estimated. Myology and Serology of the Avian Family Fringillidae A Taxonomic Study As a result of his work, Glenny offered several hypotheses concerning the phylogenetic, hence taxonomic, significance of differences in some of these vessels. Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae Nevertheless, at present it is apparent that certain characters, especially the nature of the dermal folds and pustules, and the color pattern, are of little taxonomic value in distinguishing "species" of Microbatrachylus. The Amphibians and Reptiles of Michoacán, México Because the species are not arranged in taxonomic order in this field guide, the page of the synoptic account of each is provided in the column to the right. Whales, Dolphins, and Porpoises of the Western North Atlantic A Guide to Their Identification In the course of taxonomic studies of the genus Gopherus it was found that specimens from north-central Mexico belong to an hitherto unrecognized species, which is named and described below. A New Tortoise, Genus Gopherus, From North-central Mexico The hazard of unrecognized adaptive convergence cannot, of course, be excluded from most fields of taxonomic research, but some features of morphology and biochemistry are notably more conservative than others and undergo slower evolutionary change. Myology and Serology of the Avian Family Fringillidae A Taxonomic Study The particular site of attachment of the thoracic artery is of limited value as a taxonomic character. Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae Results of these studies are the recognition of two heretofore unnamed subspecies of the red-backed mouse in the southern Rocky Mountain region, and a clarification of the taxonomic status of two additional kinds. Geographic Variation in Red-backed Mice (Genus Clethrionomys) of the Southern Rocky Mountain Region The taxonomic history of each frog is discussed under Remarks in each account. The Systematics of the Frogs of the Hyla Rubra Group in Middle America Two principal aims of the present synopsis, therefore, are to combine in one publication the current taxonomic arrangement and as much as is known of the geographic distribution of the several species and subspecies. A Synopsis of the North American Lagomorpha Such features are often of utmost importance in distinguishing the higher taxonomic categories. Myology and Serology of the Avian Family Fringillidae A Taxonomic Study The particular arrangement of the arteries of the thoracic area also seems to be of limited value as a clue to taxonomic relationships. Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae Variations of taxonomic worth are treated in the accounts of species and subspecies. Geographic Distribution and Taxonomy of the Chipmunks of Wyoming The taxonomic status of the many South American populations referred to Hyla rubra and of other populations now recognized as different species is not clear at the present time. The Systematics of the Frogs of the Hyla Rubra Group in Middle America Nor can we ignore the very marked taxonomic and architectonic talent which their construction displays. Naturalism And Religion The use of serological techniques in taxonomic work has two main advantages. Myology and Serology of the Avian Family Fringillidae A Taxonomic Study It is difficult to test these possibilities because the selective value of the taxonomic characters is unknown. Subspeciation in the Meadow Mouse, Microtus montanus, in Wyoming and Colorado Variations of taxonomic worth.—Variations in this category are described in the section immediately following the key. The Baculum in the Chipmunks of Western North America The function and taxonomic importance of the large septomaxillae are unknown and are probably associated with the modification of the sphenethmoid-prevomer area. Systematic Status of a South American Frog, Allophryne ruthveni Gaige The taxonomic status of some chipmunks of the genus Eutamias in southwestern Utah. Taxonomy of the Chipmunks, Eutamias quadrivittatus and Eutamias umbrinus The rostrum may represent, and probably does, an undescribed and extinct species of Cratogeomys, but in my opinion it should not be given formal taxonomic status until more adequate material is available. Pleistocene Pocket Gophers From San Josecito Cave, Nuevo Leon, Mexico With such a life-history as that thus briefly sketched, it is small wonder that the taxonomic place of the slime-moulds is a matter of uncertainty, not to say perplexity. The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species The skin is faded and of little taxonomic worth. Two New Moles (Genus Scalopus) from Mexico and Texas We are, therefore, left with a taxonomic enigma. Systematic Status of a South American Frog, Allophryne ruthveni Gaige A taxonomic and evolutionary study of the piñon mouse, Peromyscus truei. Mammals of Mesa Verde National Park, Colorado Some structural features not previously used were found to have taxonomic significance. Genera and Subgenera of Chipmunks Some of these doubtless have already found place in our growing taxonomic literature; some apparently undescribed; all to wait wider leisure or perhaps a younger hand. The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species Our comments concerning the taxonomic status of these several names appear beyond. Geographic Variation in the Harvest Mouse, Reithrodontomys megalotis, On the Central Great Plains And in Adjacent Regions The facts are that a critical taxonomic study of the American specimens of the subgenus Stenocranius is required in order to ascertain the geographic variation. Comments on the Taxonomy and Geographic Distribution of North American Microtines This, however, did not include an account of some of the most interesting symbiotic relations, namely, those of the ants to other species of their own taxonomic group and to termites. Introduction to the Science of Sociology Before presenting new evidence and a review of older evidence bearing on the problem, it seems desirable to review briefly in chronological order, the taxonomic history of the genera and subgenera of the chipmunks. Genera and Subgenera of Chipmunks In any cribraria the presence or relative obsolesence, of the calyculus is of little taxonomic import since that structure is variable in every species. The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species The assumption that variation in R. megalotis paralleled in degree that of other species, Peromyscus maniculatus for example, led to untenable taxonomic conclusions by some previous workers. Geographic Variation in the Harvest Mouse, Reithrodontomys megalotis, On the Central Great Plains And in Adjacent Regions This discussion of the characters of Pinus is an attempt to determine their taxonomic significance and their utility for determining the limits of the species. The Genus Pinus The breeding avifauna of Coahuila is thus in line with Mayr's analysis, resembling that of Sonora to a considerable degree at the taxonomic level of Family. Birds from Coahuila, Mexico Characters previously mentioned in the literature as having taxonomic worth for supraspecific categories of chipmunks were checked by me on specimens old enough to have worn permanent premolars. Genera and Subgenera of Chipmunks As indicated above, this was originally entered as of the genus Leocarpus; the taxonomic history of the form may interest readers who note with surprise the presentation in synonymy here developed. The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species And it may be fairly examined for negative testimony, or for the absence of connecting links, if the search be confined to the larger taxonomic divisions of the fauna and flora of the world. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions The result is a highly specialized fruit that should convey taxonomic significance of some kind. The Genus Pinus Concerning prepositions, Collado was confronted with an all but insurmountable taxonomic problem. Diego Collado's Grammar of the Japanese Language Undoubtedly Cuvier described the circulation, but it was Lamarck who actually realized the taxonomic importance of this feature and placed them in a distinct class. Lamarck, the Founder of Evolution His Life and Work In this work the authors have made no attempt to deal with the taxonomic side of the kangaroo rat problem. Life History of the Kangaroo Rat But we might reasonably expect to find a general concurrence of geological testimony to the larger fact—namely, of there having been throughout all geological time a uniform progression as regards the larger taxonomic divisions. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions Indeed there is every reason to believe that almost countless numbers of our taxonomic species have originated from common ancestral originals. Q. E. D., or New Light on the Doctrine of Creation In so far as the problem of adaptation is thus restricted in its application, it remains a question of standards, a taxonomic convenience, a problem of the organism by definition only, empty of fundamental significance. Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86 For instance, the legal profession insists on full-text access to its material; with taxonomic or geographic material, which entails numerous names, one virtually requires word-level access. Library of Congress Workshop on Etexts If we consider fishes in general, we see that there is no evidence of any relation between many of the most important taxonomic characters and function or external conditions. Hormones and Heredity It seems entirely justifiable therefore to apply it also to cases in which the systematic affinity is doubtful, as well as to instances in which it is impossible to arrive at any taxonomic conclusions. Species and Varieties, Their Origin by Mutation In short, we now know that our taxonomic classifications have been marked off on altogether too narrow lines. Q. E. D., or New Light on the Doctrine of Creation Thus in birds no less than in insects, characters previously regarded as of taxonomic value, can be evoked or withheld by the forces of the environment. Darwin and Modern Science But taxonomic studies in this direction are only in their infancy and do not give us the material required for such an analysis. Species and Varieties, Their Origin by Mutation In my opinion, those who, like Weismann, consider all taxonomic characters adaptive, are equally mistaken with Bateson and his followers, who regard all characters as mutational. Hormones and Heredity It is not to be forgotten however that all taxonomic distinctions, which have not been confirmed by physiologic tests are only provisional, a view acknowledged by the best systematists. Species and Varieties, Their Origin by Mutation Other instances of taxonomic anomalies are afforded by leaves. Species and Varieties, Their Origin by Mutation |
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