placoderm (English, noun)
expansion: placoderm (plural placoderms)
Senses:
topics: biology
history
human-sciences
natural-sciences
paleontology
sciences
glosses: A member of an extinct paraphyletic class (Placodermi) of jawed fish with armored heads and thoraces; the group lived during the Silurian and Devonian periods.
Forms:
form: placoderms
tags: plural