condylarth
/ˈkɒndɪlɑːθ/noun
1- a fossil herbivorous mammal of the early Tertiary period, ancestral to the ungulates踝节目动物。
1.1
- Order Condylarthra: several families.踝节目：数科。
词源
late 19th cent.: from modern Latin Condylarthra (plural)， from Greek kondulus 'knuckle'+arthron 'joint'.