Engelsk substantiv: placoderm | |||
1. | placoderm (om dyr) 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 | ||
Mindre spesifikke uttrykk | aquatic vertebrate | ||
Tilhører disse overordnede uttrykkene | class Placodermi, Placodermi | ||