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Captorhinidae
Captorhinidae (also known as cotylosaurs, root reptiles or stem reptiles) is one of the earliest and most basal reptile families, all members of which are thought to be extinct.
==Description==
Captorhinids are a clade of small to very large lizard-like reptiles that date from the late Carboniferous through the Permian. Their skulls were much stronger than those of their relatives, the Protorothyrididae, and had teeth that were better able to deal with tough plant material. The postcranial skeleton is very similar to that of advanced reptiliomorph amphibians, so much in fact that the amphibian Seymouriamorpha and Diadectomorpha were thought to be reptiles and grouped together in "Cotylosauria" as the first reptiles in the early 20th century. Captorhinids have broad, robust skulls that are generally triangular in shape when seen in dorsal view. The premaxillae are characteristically downturned. Early, smaller forms possessed single rows of teeth, while larger, more derived forms such as ''Captorhinus'' and ''Moradisaurus'' possessed multiple rows of teeth.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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