placodermi definition

  • noun-plural:
    • An extinct set of fishes, supposed to be ganoids. The human body and head had been covered with big bony dishes. See Illust. under pterichthys, and coccosteus.
  • others:
    • An order of fishes, constituted for many remarkable Paleozoic forms of skeptical interactions.
  • noun:
    • extinct band of bony-plated fishes with ancient jaws

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