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Archosauria or archosaurs (/ˈɑːrkəˌsɔːr/[3]) is a clade of diapsid sauropsid tetrapods, with birds and crocodilians being the only known extant representatives. Although broadly classified as reptiles, which traditionally exclude birds, the cladistic sense of the term includes all living and extinct relatives of birds and crocodilians such as non-avian dinosaurs, pterosaurs, phytosaurs, aetosaurs and
rauisuchians as well as many Mesozoic marine reptiles. Modern paleontologists define Archosauria as a crown group that includes the most recent common ancestor of living birds and crocodilians, and all of its descendants.
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https://en.wikipedia.org/wiki/Archosaur
Archosaur https://www.google.com/gasearch?q=archosaurs&source=sh/x/gs/m2/5