ALL meanings of ostracoderm
os·tra·co·derm
O o - noun ostracoderm An extinct jawless fish of the Cambrian to Devonian periods, having a heavily armored body. 1
- noun ostracoderm any of several extinct jawless fishes of the Ordovician, Silurian, and Devonian periods, having the body enclosed in an armor of bony plates. 1
- noun ostracoderm any extinct Palaeozoic fishlike jawless vertebrate of the group Ostracodermi, characterized by a heavily armoured body 0