| 单词 | 有牙 |
| 释义 | 〔dentigerous〕Having or furnished with teeth.有牙的或用牙装饰的〔conodont〕A Paleozoic microfossil usually having a toothlike shape and considered to be the remains of an extinct marine organism.牙形刺：一种古生代微化石，一般有牙状形体，被认为是一种已灭绝海生生物体的残骸〔dentulous〕Possessing teeth; toothed.有牙的；有齿的〔ichthyosaur〕Any of various extinct fishlike marine reptiles of the order Ichthyosauria of the Triassic Period to the Cretaceous Period, having a porpoiselike head and an elongated, toothed snout.鱼龙：三叠纪至白垩纪间的属于鱼龙目的水生爬行动物中的任一种，现已绝迹，该动物头象海豚，喙长，有牙 |
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