| 释义 |
placoderms 英plə'kəʊdɜːmz美plə'kəʊdɜːmz COCA³¹⁵¹¹¹⁺⁴BNC²³⁶²¹³⁺¹Economist⁴¹³⁰³⁺²
基本英英
盾皮鱼纲¹⁰⁰原型placoderm的复数
名词 placoderm:
fish-like vertebrate with bony plates on head and upper body; dominant in seas and rivers during the Devonian; considered the earliest vertebrate with jaws |