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Dibranchiata (Noun)

Meaning

Comprising all living cephalopods except the family Nautilidae: the orders Octopoda (octopuses) and Decapoda (squids and cuttlefish).

Classification

Nouns denoting animals.

Examples

  • The class Cephalopoda is often divided into two subclasses, the nautiloid Nautiloidea and the dibranchiata Cephalopoda that comprises all the living cephalopods except the family Nautilidae.
  • The dibranchiata is distinguished from nautiloids by the possession of only one gill, as opposed to four pairs in nautiloids.
  • The shell in dibranchiata is usually internal or absent and siphunculi are present in its chambered shell.
  • Dibranchiata possess a distinct head with large brain and eyes, and a pair of tentacles and arms that are usually modified for grasping and crawling.
  • The dibranchiata includes the orders Octopoda, which comprises the octopuses, and Decapoda, which comprises the squids and cuttlefish.

Synonyms

  • Subclass Dibranchiata
  • Dibranchia
  • Subclass Dibranchia
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