monorhina definition

  • noun-plural:
    • The Marsipobranchiata.
  • noun:
    • A primary division regarding the Vertebrata, or any other major selection of vertebrates, represented by the Marsipobranchii (Cyclostomi or roundmouths), the lampreys and hags (Hyperotreta and Hyperoartia), where the nasal passage is solitary: distinguished from all the other cranial vertebrates, or Amphirhina. Also, much more precisely, Monorrhina.
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