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