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Definition of Dibranchia
1. Noun. Comprising all living cephalopods except the family Nautilidae: the orders Octopoda (octopuses) and Decapoda (squids and cuttlefish).
Exact synonyms: Dibranchiata, Subclass Dibranchia, Subclass Dibranchiata
Group relationships: Cephalopoda, Class Cephalopoda
Member holonyms: Octopoda, Order Octopoda, Decapoda, Order Decapoda, Belemnoidea, Order Belemnoidea
Generic synonyms: Class
Group relationships: Cephalopoda, Class Cephalopoda
Member holonyms: Octopoda, Order Octopoda, Decapoda, Order Decapoda, Belemnoidea, Order Belemnoidea
Generic synonyms: Class