Archosauria

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Related to archosaur: Lepidosaur

Archosauria

[‚är·kə′sȯr·ē·ə]
(vertebrate zoology)
A subclass of reptiles composed of five orders: Thecodontia, Saurischia, Ornithschia, Pterosauria, and Crocodilia.
References in periodicals archive ?
There may be other new species waiting to be found at the Arlington Archosaur Site because it contains the remains of an ecosystem that flourished between 95 million and 100 million years ago.
The new lungfish tooth plates discussed herein were recovered from Lewisville Member exposures occurring at a productive new Texas fossil locality; the Arlington Archosaur Site (Fig.
Representing a broad range of depositional environments, ranging from perennial lacustrine to fluvial and aeolian settings, and documented by hundreds of fossils, these assemblages lack any of the characteristic Late Triassic faunal elements, most conspicuously metoposaurid temnospondyls, phytosaurs, procolophonids, and diverse non-crocodylomorph and non-dinosaurian archosaurs, all of which are known from older assemblages in the Fundy basin and elsewhere.
Now there are many more cases of herbivorous archosaurs.
It further implies that one-way airflow evolved in archosaurs earlier than once thought, and may explain why those animals came to dominance in the Early Triassic Period, after the extinction and when the recovering ecosystem was warm and dry, with oxygen levels perhaps as low as 12 percent of the air compared with 21 percent today.
Phytosaurs were long considered early crocodile-line archosaurs but Nesbitt (2011) recently placed them outside crown-group Archosauria.
Pterosaurian archosaurs were the dominant group of flying reptiles along most of the Cretaceous (WANG et al.
The breathing method is believed to have first appeared in ancient reptiles called archosaurs which dominated the Earth 251 million years ago.
Dinosaurs and crocodiles belong to a group of large reptiles known as archosaurs, which prowled the earth during the Mesozoic Era, some 256 million years ago, when man's nearest ancestors were primitive mammals no bigger or complex than the common shrew.
We also discuss flying & swimming archosaurs and other animals of that period as well as earlier and later periods.
edu/2016/07/11/dinosaurs-may-have-cooed-like-doves) Chad Eliason , a postdoctoral researcher at The University of Texas Jackson School of Geosciences and the study's co-author, said: "Our results show that closed-mouth vocalization has evolved at least 16 times in archosaurs, a group that includes birds, dinosaurs and crocodiles.
But Farmer cautions that because lizard lungs have a different structure than bird and alligator lungs, it is also possible that one-way airflow evolved independently about 30 million years ago in the ancestors of monitor lizards and about 250 million years ago in the archosaurs, the group that gave rise to alligators, dinosaurs and birds.