Sentences with phrase «synapsid reptiles»
The pelycosaurs were smallish to large (up to 3 meters or more) primitive Late Paleozoic synapsid reptiles.
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Mammals don't have this ring, but it was present in the mammal - like reptiles or «synapsids» they evolved from.
Dimetrodon was a synapsid, sometimes called a proto - mammal or a mammal - like reptile.
There is a vast diversity of additional groups of fossil vertebrates, including: (1) crocodilians and their extinct pseudosuchian kin; (2) marine reptiles such as plesiosaurs, ichthyosaurs, placodonts, and the like; (3) lepidosaurs (snakes, lizards, mosasaurs, tuataras, and their extinct relatives); (4) other fossil reptiles; (5) the extinct synapsid ancestors and relatives of mammals; and (6) amphibian - grade animals such as lepospondyls, temnospondyls, and seymouriamorphs (Benton 2014).
The reptiles were mainly synapsids (Pelycosaurs and Therapsids) that appeared in the Upper Carboniferous, and were bulky, cold - blooded animals with small brains Towards the very end of the Permian the first archosaurs appear, the ancestors of the soon to follow Triassic dinosaurs.
Like other non-mammalian synapsids, therocephalians are described as mammal - like reptiles, although in fact, Therocephalia is the group most closely related to the cynodonts, which gave rise to the mammals.