kristin14
kristin14 kristin14
  • 24-02-2017
  • Biology
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what are placoderms?

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Аноним Аноним
  • 24-02-2017
an extinct fish of the Devonian period, having the front part of the body encased in broad flat bony plates.
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bbmurrell
bbmurrell bbmurrell
  • 24-02-2017
An extinct class of prehistoric, armoured fish.
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