Êëàññ Ðàêîîáðàçíûå – Ñrustacea
  Îòðÿä ÙÈÒÍÈ — Notostraca


{Lepidurus apus — http://en.wikipedia.org/wiki/File:LepidurusApus.jpg]






[Triops cancriformis — http://en.wikipedia.org/wiki/File:Triops_cancriformis2.jpg]


ÍÀÇÀÄ