Placodermi

Placodermi

Plac`o*der"mi\, n. pl. [NL., fr. Gr. ?, ?, a tablet + ? skin.] (Paleon.) An extinct group of fishes, supposed to be ganoids. The body and head were covered with large bony plates. See Illust. under Pterichthys, and Coccosteus.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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