獣じゅう歯し類るい

noun

Theriodontia; theriodonts

Scientific term for an extinct group of mammal-like reptiles; used in paleontology.

• 獣じゅう歯し類るいは哺ほ乳にゅう類るいの祖そ先せんに近ちかいとされる。

  Theriodonts are considered close to the ancestors of mammals.