| 单词 | cotylosaur |
| 释义 | cotylosaur —cotylosaurian, adj. /kot"l euh sawr'/, n. any member of the extinct order Cotylosauria, comprising heavy-bodied, splay-limbed, plant-eating reptiles that arose during the Carboniferous Period and that are considered to include the ancestors of all other reptiles. [1900-05; < NL Cotylosauria, equiv. to cotyl(lus) a hollow space in the bones forming the distinctive articulation of skull and vertebrae, which orig. defined the order (masc. n. < Gk kotýle socket, cup, anything hollow) + -o- -O- + -sauria; see -SAUR, -IA] |
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