Placodermi
盾皮綱; 盾皮魚綱
Plac·o·der·mi n. pl. 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.
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Placodermi
n : extinct group of bony-plated fishes with primitive jaws
[syn: class Placodermi]