placoderm | ||
1. | [ noun ] (zoology) fishlike vertebrate with bony plates on head and upper body; dominant in seas and rivers during the Devonian; considered the earliest vertebrate with jaws | |
Related terms: | aquatic_vertebrate Placodermi | |
Similar spelling: |
Placodermi playactor placoid Placide Plectophera placid placed placidness plucked plicate pleased playact placate |