cotylosaur
noun
co·ty·lo·saur
ˈkä-tə-lō-ˌsȯr 
-lə-ˌsȯr,
kə-ˈti-lə-
: any of an order (Cotylosauria) of extinct primitive reptiles of the Carboniferous to Triassic with short legs and massive bodies that were probably the earliest truly terrestrial vertebrate animals
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“Cotylosaur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cotylosaur. Accessed 26 Nov. 2024.
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