| 单词 | therapsid |
| 例句 | Life is discovered on Mars in the shape of fish-lizard creatures called therapsids, although it is not plain how these beasts are able to subsist without any larger ecosystem. Finches of Mars by Brian Aldiss – review 2013-06-05T12:55:01Z The zygomatic arch, or cheekbone, is present in mammals and advanced therapsids such as cynodonts, but is not present in pelycosaurs. Fundamentals of Biology 2015-01-01T00:00:00Z The pectoral region, for example, appeared in the therapsids as they evolved longer forelimbs, positioned under the body rather than splayed to the sides. The evolution of the spine fueled the rise of mammals—and human back problems 2018-09-20T04:00:00Z Moreover, if the formation is from the later parts of the Early Permian, it is roughly the age when we would expect early therapsids to be present. Scientist at Work Blog: How Old is the 'Fire Stone'? 2012-04-13T19:27:53Z Skull of the therapsid Lycaenops on display at the Field Museum of Natural History. Scientist at Work Blog: On the Origin of Therapsids 2012-04-12T15:13:03Z Prior to 251 million years ago, the dominant, large animals on land were the therapsids, early forerunners to mammals. The Secret of Dino Success 2012-02-01T00:03:00Z Mammals evolved from therapsids in the late Triassic period, as the earliest known mammal fossils are from the early Jurassic period, some 205 million years ago. Fundamentals of Biology 2015-01-01T00:00:00Z Romer and Price suggest that Haptodus, although too late in time to be an actual ancestor, shows "all the common features of the Dimetrodon group on the one hand and the therapsids on the other." The Adductor Muscles of the Jaw In Some Primitive Reptiles Synapsids also include therapsids, which were mammal-like reptiles from which mammals evolved. Fundamentals of Biology 2015-01-01T00:00:00Z The recent discovery of the very early therapsid Raranimus in China suggests that incomplete geographic sampling may indeed be an important factor contributing to the uncertainty surrounding the early history of therapsids. Scientist at Work Blog: On the Origin of Therapsids 2012-04-12T15:13:03Z Many therapsids disappeared, and the few, diminutive lineages that survived faced competition from a different sort of creature—the archosauromorphs. The Secret of Dino Success 2012-02-01T00:03:00Z Mammals probably evolved from therapsids in the late Triassic period, as the earliest known mammal fossils are from the early Jurassic period. Fundamentals of Biology 2015-01-01T00:00:00Z Synapsids give rise to mammals, which are therapsids. Fundamentals of Biology 2015-01-01T00:00:00Z The area also was ideally located to catch early therapsids or their ancestors if they were dispersing from equatorial North America to southern Africa. Scientist at Work Blog: On the Origin of Therapsids 2012-04-12T15:13:03Z As we’ll see, the rocks preserved in the Parnaíba Basin of northeastern Brazil appear to be the right age to preserve early therapsid fossils. Scientist at Work Blog: On the Origin of Therapsids 2012-04-12T15:13:03Z |
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