protorosaur

fossil reptile

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June 18, 2026

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The term "protorosaur" refers to a fossil reptile belonging to the order Protorosauria. This order comprised relatively small reptiles from the Permian and Triassic periods. A genus within this order is Protorosaurus, which were lizard-like reptiles from the upper Permian period that could reach several yards in length. The adjective "protorosaurian" describes something related to the Protorosauria.1234

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Permian Period
Emergence of important reptiles
…certain locations and include the protorosaurs, aquatic reptiles ancestral to archosaurs (dinosaurs, crocodiles, and birds); the captorhinomorphs, “stem reptiles” from which most other reptiles are thought to have evolved; eosuchians, early ancestors of the snakes and lizards; early anapsids, ancestors of turtles; early archosaurs, ancestors of the large
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…certain locations and include the protorosaurs, aquatic reptiles ancestral to archosaurs (dinosaurs, crocodiles, and birds); the captorhinomorphs, “stem reptiles” from which most other reptiles are thought to have evolved; eosuchians, early ancestors of the snakes and lizards; early anapsids, ancestors of turtles; early archosaurs, ancestors of the large
Read More