What does "cotylosaur" mean?

A member of the Cotylosauria, a synonym of the family †Captorhinidae, the earliest group of true reptiles from the Carboniferous through the Permian.

What is a synonym for "cotylosaur"?

Common synonyms include: animal, dinosaur, mammoth.

noun

noun ·Rare ·Advanced level

Noun

1
A member of the Cotylosauria, a synonym of the family †Captorhinidae, the earliest group of true reptiles from the Carboniferous through the Permian. dated