#suborder_Heterostraci__Heterostraci  extinct group of armored jawless fishes or fishlike vertebrate; taxonomy is not clear
  supertype:  #animal_order  the order of animals
  member of:  #order_Ostracodermi
  member:  #heterostracan  extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian

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