| 单词 | synapsid |
| 例句 | Hellert created a massive family tree of the synapsids, the group of animals of which mammals are the last surviving members. Survival of the newest: the mammals that survive mass extinctions aren't as 'boring' as scientists thought 2023-10-05T04:00:00Z These synapsids, he added, “are more closely related to us than any dinosaur or other reptile.” A Saber-Toothed Predator From Long Before Evolution Came Up With Cats 2023-05-22T04:00:00Z They are the only living synapsids, as earlier forms became extinct by the Jurassic period. Fundamentals of Biology 2015-01-01T00:00:00Z The researchers set about amassing a data set of 56 fossil synapsids, the group that contains mammals and their relatives, to pinpoint when mammal ancestors crossed this critical physiological threshold. New Evidence Emerges in Mystery of When Mammals Became Warm-Blooded 2022-07-20T04:00:00Z Mammals, as previously mentioned, got their start from a reptilian synapsid ancestor possibly in the late Paleozoic. An Introduction to Geology 2017-01-01T00:00:00Z At some points, larger synapsids were the ones that survived, and the winners weren't just generalist insect-eaters. Survival of the newest: the mammals that survive mass extinctions aren't as 'boring' as scientists thought 2023-10-05T04:00:00Z The reason that tusks are currently limited to modern mammals, then, lies in a specific arrangement of teeth that mammals inherited from the broader family of synapsids, the group that includes mammal forerunners like dicynodonts. How Did Elephants and Walruses Get Their Tusks? It’s a Long Story. 2021-10-28T04:00:00Z The jawbone also shows changes from early synapsids to later ones. Fundamentals of Biology 2015-01-01T00:00:00Z There, the team not only found the pictured footprint, but also discovered two dozen other prints left 183 million years ago by carnivorous and herbivorous dinosaurs, as well as small creatures called synapsids. When Dinosaurs Left Tracks in a Land Consumed by Lava and Fire 2020-01-29T05:00:00Z Another group, known as the synapsids, eventually evolved into mammals. An Introduction to Geology 2017-01-01T00:00:00Z Julius and I endeavored to surprise and delight readers with our interpretation of how this giant synapsid might have looked walking through Late Triassic–era Poland. Our favorite Science illustrations of 2019 2020-01-10T05:00:00Z Ultimately, they analyzed spines from 16 synapsids, creatures that lived 200 million to 300 million years ago and include distant and immediate predecessors to mammals. The evolution of the spine fueled the rise of mammals—and human back problems 2018-09-20T04:00:00Z Mammals are synapsids, meaning that they have a single opening in the skull. Fundamentals of Biology 2015-01-01T00:00:00Z That problem remains, but a new species of exceptionally-preserved protomammal from the 290 million year old rock of Germany adds a little more context to discussions of what early synapsids looked like. Paleo Profile: The Climbing Dwarf 2018-04-15T04:00:00Z An early synapsid with extensive soft tissue preservation. Fossils We Want To Find 2017-07-23T04:00:00Z The oldest synapsids possessed eye dimensions consistent with night activity. Ancient nightlife: Forebearers of mammals were nocturnal partiers 2014-09-03T04:00:00Z Dinosaurs and synapsids, of course, did not fare so well. Welcome to the Squamozoic! 2013-04-01T13:45:05.040Z The initial split was into synapsids and sauropsids. Synapsids include all mammals, including extinct mammalian species. Fundamentals of Biology 2015-01-01T00:00:00Z To get multiple specimens of a synapsid with integument is a big deal. Paleo Profile: The Climbing Dwarf 2018-04-15T04:00:00Z I consider it a joke that someone can claim to comprehensively sample all synapsids, lepidosaurs, archosaurs, marine reptiles and other tetrapods and do so with c. Why the world has to ignore ReptileEvolution.com 2012-07-04T11:45:05.397Z Researchers found that the eyes of ancient synapsids likely spanned a range of light sensitivities, some suited to nighttime and others favoring daylight. Ancient nightlife: Forebearers of mammals were nocturnal partiers 2014-09-03T04:00:00Z But as we continued working, we thought less of the synapsids and thought more about the meanings of our new fossil discoveries and our new geological data. Scientist at Work Blog: Rethinking the Past of the Parna?ba Basin 2012-05-07T14:49:46Z Anapsids have no temporal fenestrae, synapsids have one, and diapsids have two. Fundamentals of Biology 2015-01-01T00:00:00Z One fossil is too little to speak for them all, but it throws some weight to the traditional theme of early synapsids being more reptile-like in appearance. Paleo Profile: The Climbing Dwarf 2018-04-15T04:00:00Z This might stem from the environments represented by the rocks being inhospitable to synapsids. Scientist at Work Blog: Farewell to Nova Iorque 2012-04-26T17:32:55Z They date from the Permian period of earth history, a time when synapsids were some of the dominant animals on land. Scientist at Work Blog: How Old is the 'Fire Stone'? 2012-04-13T19:27:53Z To continue to trace synapsid history after this time, we need to look at the fossil record preserved in younger rocks in other geographic areas, traditionally South Africa and European Russia. Scientist at Work Blog: On the Origin of Therapsids 2012-04-12T15:13:03Z This arrangement of jaw and ear bones aids in distinguishing fossil mammals from fossils of other synapsids. Fundamentals of Biology 2015-01-01T00:00:00Z All synapsids share a more recent common ancestor with one another than they do with any reptile. Scientist at Work Blog: Have You Seen This Animal? 2012-04-11T19:24:41Z We didn’t find the synapsids we were hoping to discover. Scientist at Work Blog: Farewell to Nova Iorque 2012-04-26T17:32:55Z In the course of synapsid evolution leading to mammals, the temporal presumably became the main muscle mass acting in adduction of the lower jaw. The Adductor Muscles of the Jaw In Some Primitive Reptiles Ancient synapsids are interesting for many reasons, but we hope our fieldwork this year in Brazil will help to address a particular problem in synapsid evolution. Scientist at Work Blog: On the Origin of Therapsids 2012-04-12T15:13:03Z Mammals are synapsids, meaning they have a single opening in the skull. Fundamentals of Biology 2015-01-01T00:00:00Z All living mammals, as well as extinct mammals like woolly mammoths and giant ground sloths, are members of a larger group known as synapsids. Scientist at Work Blog: Have You Seen This Animal? 2012-04-11T19:24:41Z Ken Angielczyk, courtesy of the Field Museum of Natural HistoryA skeleton of the synapsid Dimetrodon on display at the Field Museum of Natural History. Scientist at Work Blog: Have You Seen This Animal? 2012-04-11T19:24:41Z |
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