placoderm: Meaning and Definition of

plac•o•derm

Pronunciation: (plak'u-dûrm"), [key]
— n.
  1. any of various extinct jawed fishes of the class Placodermi, dominant in seas and rivers during the Devonian Period and characterized by bony armored plates on the head and upper trunk.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
placode placoid
✖
 

 

sandbbox logo
FEN Learning is part of Sandbox Networks, a digital learning company that operates education services and products for the 21st century.