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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 Placodermi
 盾皮綱; 盾皮魚綱

From: Webster's Revised Unabridged Dictionary (1913)

 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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From: WordNet (r) 2.0

 Placodermi
      n : extinct group of bony-plated fishes with primitive jaws
          [syn: class Placodermi]