placoderm
noun
Definitions
A member of an extinct class (Placodermi) of jawed fish with armored heads and thoraces; the group lived during the Silurian and Devonian periods.
adjective
Definitions
Pertaining to the class Placodermi.
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Definitions
A member of an extinct class (Placodermi) of jawed fish with armored heads and thoraces; the group lived during the Silurian and Devonian periods.
Definitions
Pertaining to the class Placodermi.