stereospondyl
/ˌsterɪəʊˈspɒndɪl/noun
1- a fossil amphibian with a broad flat head, occurring in the Permian and Triassic periods全椎亚目的一种化石。
1.1
- Suborder Stereospondyli, order Temnospondyli: several families.全椎亚目, 离椎目：数科。
词源
early 20th cent.: from modern Latin Stereospondyli (plural), from Greek stereos 'solid' + spondulos 'vertebra'.