| 单词 | brachiopod |
| 例句 | There was Edward Sylvester Morse, a zoologist who went to Japan in 1862 to study brachiopods and ended up amassing ceramics. 2010-01-15T06:06:00Z The pattern of cells in the nervous system suggested the animals belong to a vast group called the lophotrochozoans, which includes mollusks, corallike animals called bryozoans, brachiopods, and flatworms. ‘Mind-boggling’ sea creature spotted off Japan has finally been identified 2023-09-21T04:00:00Z However, molecular evidence has revealed that arthropods are actually more closely related to nematodes, now comprising the ecdysozoan clade, and annelids are more closely related to mollusks, brachiopods, and other phyla in the lophotrochozoan clade. Fundamentals of Biology 2015-01-01T00:00:00Z But by the Devonian Period some 70 million years later, most of these brachiopods, briopods and related well-shelled mariners had gone extinct, victims of theft and their own extravagant ways. The Sad Fate of the Ancient, Well-Shelled Mariners 2022-11-04T04:00:00Z “It would be very difficult to convince someone of that if it’s a brachiopod, but T. rex takes it to another level.” Splitting T. Rex Into 3 Species Becomes a Dinosaur Royal Rumble 2022-07-25T04:00:00Z Dr. Jurikova and her team discovered spikes of the element boron — a proxy for acidity levels — in fossil brachiopod shells found in rocks in Italy that stretch across the extinction boundary. Burning Fossil Fuels Helped Drive Earth’s Most Massive Extinction 2020-11-18T05:00:00Z Ancient sea creatures - including corals, brachiopods and crinoids - deposited their shells in the sea. Holiday candlelight tours return to Lewis & Clark Caverns 2019-12-21T05:00:00Z Invertebrate groups that experienced diversification included horseshoe crab-like trilobites, clams, clam-like brachiopods and a group called gastropods that included snails and slugs. Distant asteroid calamity shaped life on Earth 466 million years ago 2019-09-18T04:00:00Z As researchers recently proposed in the journal Trends in Ecology and Evolution, the collapse of the brachiopod empire exemplifies a struggle that has defined life from the start: the quest for phosphorus. The Sad Fate of the Ancient, Well-Shelled Mariners 2022-11-04T04:00:00Z Walcott classified his oddities within known groups, noting that some Burgess Shale fossils, such as the brachiopods, persisted after the Cambrian or even into the present. Some of Earth’s first animals—including a mysterious, alien-looking creature—are spilling out of Canadian rocks 2018-11-20T05:00:00Z The seashells once housed marine worms called brachiopods, but the burrows were a mystery. Glimpses of a Mass Extinction in Modern-Day Western New York 2018-07-04T04:00:00Z These were brachiopods, shelled creatures that dominated the ancient seas but are less common today. Here’s how to find D.C.’s accidental museum of paleontology 2016-08-18T04:00:00Z Switching to ecology, Paine studied a living fossil: a species of lamp shell, or brachiopod, for his 1961 PhD. Robert Treat Paine (1933-2016) : Nature : Nature Research 2016-07-19T04:00:00Z But as the seas grew crowded and bony fishes appeared, phosphate supplies dwindled, and brachiopods could no longer freely scavenge what they needed to construct their expensive housing. The Sad Fate of the Ancient, Well-Shelled Mariners 2022-11-04T04:00:00Z “This is a brachiopod,” one expert told Michael Lloyd, 8, of Mantua, describing a clamlike mollusk. Behind a Shopping Center in New Jersey, Signs of a Mass Extinction 2016-01-04T05:00:00Z The dramatic change roughly marks the Taghanic Event—a mass extinction that razed corals, brachiopods, and squid-like creatures stuffed in elegant shells all over the world. Glimpses of a Mass Extinction in Modern-Day Western New York 2018-07-04T04:00:00Z Many species alive today, including crinoids and brachiopods, follow this same pattern. Super-Spiky Ancient Worm Makes Its Debut 2015-06-29T04:00:00Z Then, Dr Bond's team noticed that in younger rock layers, new brachiopod and bivalve species re-emerged. New mass extinction event proposed by geologists 2015-04-21T04:00:00Z There, Bond and his colleagues examined chert rocks—silica formations, created by the skeletons of dead sponges, that also contain many species of brachiopods. Sixth extinction, rivaling that of the dinosaurs, should join the big five, scientists say 2015-04-16T04:00:00Z Daddy, I found a brachiopod!” the discoverer shouted. Behind a Shopping Center in New Jersey, Signs of a Mass Extinction 2016-01-04T05:00:00Z These creatures, such as sponges and brachiopods, spend their lives attached to the rocks or the seafloor. 'Mother Lode' of Fossils Discovered in Canada 2014-02-11T22:08:00Z A large number of bacterial sequences, reports the team, were from "animal commensals, mutualists and pathogens… including those associated with annelids, sea anemones, brachiopods, tardigrades and fish." Antarctic lake 'might have fish' 2013-07-08T13:29:29Z However, in the middle of the Capitanian strata, brachiopod diversity fell precipitously: 87% of the species vanished in a few tens of thousands of years, a mere blip on the geologic time scale. New mass extinction event proposed by geologists 2015-04-21T04:00:00Z Clamlike creatures called brachiopods and trilobites—those extinct cousins of today's lobsters and insects, with their hard exoskeletons, long antennae and compound eyes—reigned supreme. Tiny Plants That Once Ruled the Seas (preview) 2013-05-15T11:15:00.233Z Most of the main groups of the animal kingdom—arthropods, brachiopods, coelenterates, echinoderms, molluscs and even chordates, the branch from which vertebrates went on to develop—are found in the fossil beds of the Cambrian. The Cambrian explosion: Kingdom come 2013-03-21T16:02:17Z His chief work was the description of the invertebrate fossils of New York—in which he dealt with the graptolites, brachiopods, mollusca, trilobites, echini and crinoids of the Palaeozoic formations. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z Still longer-ranging genera occur among the brachiopods, for living Lingula and Crania have specific representatives as far back as the early Ordovician. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z This interesting brachiopod was found in the limestone by Captain M'Clure, at the Princess Royal Islands, in the Prince of Wales' Strait, between Baring Island and Prince Albert Land. In the Arctic Seas A Narrative of the Discovery of the Fate of Sir John Franklin and his Companions 2011-10-10T02:00:18.377Z The brachiopods and trilobites have likewise been made use of for zonal purposes among the oldest sedimentary formations. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" 2011-09-19T02:00:10.473Z The oldest known fossils occur in these rocks, and consist of a small number of brachiopods, molluscs, crustaceans, etc. North America 2011-05-05T02:00:20.027Z They are divided into lower, middle, and upper series, the middle most abounding in fossils, including corals, crinoids, brachiopods, and molluscs. The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde 2011-04-14T02:00:57.977Z In fact the Cambrian has sponges, primitive corals, a great variety of brachiopods, the beginnings of gastropods, a wonderful array of trilobites, and other lowly forms of arthropods. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z Spicules of sponges and fragments of other organisms, such as molluscs, polyzoa, foraminifera and brachiopods, often occur in flint, and may be partly or wholly silicified with retention of their original structure. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z The researchers made the discovery while studying a species of brachiopods, or lamp shells, which live in shells but are marine worms unrelated to mollusks like clams and oysters. In a Marine Worm?s Eyes, the Theory of Evolution 2011-03-01T05:18:37Z That was also the geologic moment when a whole raft of brachiopods and bryozoans—stalked seafloor dwellers and mossy-looking colonial organisms—disappeared. How to Read a Prehistoric Thermometer 2011-01-27T21:05:13Z Shelly creatures such as trilobites and brachiopods, of whose ancestors there is little sign in the rocks, are suddenly everywhere. Palaeontology: Do the locomotion 2010-03-04T11:17:00Z Polyzoa were abundant; brachiopods were fairly common, though subordinate to the pelecypods; they were mostly rhynchonellids and terebratulids, which lived side by side with the ancient forms, like Crania and Discina. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 6 "Coucy-le-Château" to "Crocodile" In the Devonian period the brachiopods reached the climax of their development: they compose three-quarters of the known fauna, and more than 1100 species have been described. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" Very primitive forms of water life, crustaceans, brachiopods and algæ. The Book of the National Parks Other brachiopods, corals and trilobites are present, and are similar to those found in the Wenlock limestone. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" Myriads of brachiopods lived, moved, and had their being. Some Winter Days in Iowa This example illustrates the nature of many other known series of mollusks and of brachiopods, extending over longer intervals and connecting more widely separated ages like the Secondary and the present period. The Doctrine of Evolution Its Basis and Its Scope The central calcareous zone abounds in corals and crinoids as well as in numerous brachiopods. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" They are present in many annelids, brachiopods, mollusks, and crustaceans. The Gutenberg Webster's Unabridged Dictionary Section S The same kind of coelom-formation as in sagitta was afterwards found by Kowalevsky in brachiopods and other invertebrates, and in the lowest vertebrate—the amphioxus. The Evolution of Man — Volume 1 Up to a certain point they amused her; she could talk of ammonites, of brachiopods, and would point a friend's attention to the Calceola sandalina which Martin prized so much. Born in Exile The two valves of the brachiopod shell are unequal in size, and in each valve a line drawn from the beak to the base divides the valve into two equal parts. The Elements of Geology The two most prominent features of the Devonian seas are presented by corals and brachiopods. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" Notwithstanding the antiquity of this Russian formation, it should be stated that both of these genera of brachiopods have been also found in the Upper Silurian of England, i.e. The Student's Elements of Geology My fear is whether brachiopods have changed enough. Life and Letters of Charles Darwin — Volume 2 For many brachiopods, both recent and fossil, the individual development, or ontogeny, has been worked out and has proved to be of great assistance in the problems of classification and phylogeny. Darwin and Modern Science Colonies of brachiopods and other lime-secreting animals occupied the sea bottom, and their debris mantled it with sheets of limy ooze. The Elements of Geology In the Silurian ages, invertebrates—brachiopods and crinoids and cephalopods—were the dominant types. A History of Science — Volume 3 The predominance of bivalve mollusca of this peculiar class has caused the Silurian period to be sometimes styled "the age of brachiopods." The Student's Elements of Geology The process is apparently the same in a nebula or a brachiopod, although much more intricate in the latter. The Soul of the Far East The limestone-making seas of the Silurian swarmed with corals, crinoids, and brachiopods. The Elements of Geology The seashells, both brachiopods and mollusks, are in some respects the most important to the geologist of all fossils. The Elements of Geology Thus the brachiopods, a type of shellfish, have made no progress since the Paleozoic, and some of their earliest known genera are represented by living forms hardly to be distinguished from their ancient ancestors. The Elements of Geology Not one of these is common to rocks newer than the Palaeozoic, and the brachiopods are the only group which have furnished species common to the more ancient or Carboniferous rocks. The Student's Elements of Geology |
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