| 单词 | 爬虫类 |
| 释义 | 〔Mesozoic〕Of, relating to, or being the third era of geologic time, including the Triassic Period, the Jurassic Period, and the Cretaceous Period and characterized by the development of flying reptiles, birds, and flowering plants and the appearance and extinction of dinosaurs. See table at geologic time 中生代的：包括三叠纪、侏罗纪和白垩纪在内的地质史上第三个时代的，它以飞行的爬虫类、鸟类及开花植物类的发展和恐龙的出现与灭绝为特征，或关于这个时代的 参见 geologic time〔cotylosaur〕Any of an extinct order (Cotylosauria) of massive primitive reptiles of the Carboniferous and Permian periods that included the ancestors of all of the reptiles. Also called root reptile Also called stem reptile 杯龙类：任何大的原始爬虫类（杯龙类）的已灭绝种类之一，属于包含所有爬虫类的祖先的石炭纪和二迭纪时代 也作 root reptile 也作 stem reptile |
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