Cancroidea

Cancroidea is a superfamily of crabs, comprising the families Atelecyclidae and Cancridae.^[1] Four other families have been separated into new superfamilies: Cheiragonidae into Cheiragonoidea, Corystidae into Corystoidea, and both Pirimelidae and Thiidae into Portunoidea.^[2] Montezumellidae has been moved from Cancroidea to his own Superfamily Montezumelloidea.^[3]

Cancroidea
Cancer pagurus
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Infraorder:	Brachyura
Subsection:	Heterotremata
Superfamily:	Cancroidea Latreille, 1802
Families
Atelecyclidae Cancridae