Definitions

1. noun

A type of extinct early amniote, which is thought to be the ancestor of reptiles and mammals.

“The discovery of the keratoidea provided valuable insights into the evolution of vertebrates.”

2. adjective

Resembling or related to the keratoidea, especially in its morphology or characteristics.

“The fossilized remains of the keratoidean-like creature were found in the same geological formation.”