hydrobranchiata definition

  • noun-plural:
    • a thorough synthetic unit of gastropod mollusks, including the ones that inhale by gills, as contrasted using the Pulmonifera.
  • others:
    • In Lamarck's latest classification, a division of gastropods, distinguished from Pneumobranchiata, and containing types which inhale water only. The section imperfectly corresponds into the nudibranchiates, inferobranchiates, and tectibranchiates of Cuvier.
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