placoderm

英 ['plækədɜːm] 美 ['plækəˌdərm]

• n. [古生]盾皮鱼

placoderm的英文翻译是什么意思，词典释义与在线翻译：

英英释义

Noun:

1. 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