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Noun: osteostracan
  1. Extinct jawless fish of the Devonian with armoured head
    - cephalaspid

Derived forms: osteostracans

Type of: agnathan, jawless fish, jawless vertebrate

Part of: Cephalaspida, Osteostraci, suborder Cephalaspida, suborder Osteostraci

Encyclopedia: Osteostracan

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