Also found in: Thesaurus.
Switch to new thesaurus
|Noun||1.||subclass Dibranchia - comprising all living cephalopods except the family Nautilidae: the orders Octopoda (octopuses) and Decapoda (squids and cuttlefish)|
Belemnoidea, order Belemnoidea - order of extinct dibranchiate cephalopods related to the surviving spirulas
class - (biology) a taxonomic group containing one or more orders