| 单词 | cotylosaur |
| 释义 | cot·y·lo·saur (kŏtl-ə-sôr′)n. Any of various large reptilelike extinct tetrapods of the Carboniferous and Permian Periods, traditionally placed in the order Cotylosauria. [Greek kotulē, hollow object, socket + Greek sauros, lizard.] |
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