Cancroidea is a superfamily of crabs, comprising the families Atelecyclidae and Cancridae. Four other families have been separated into new superfamilies: Cheiragonidae into Cheiragonoidea, Corystidae into Corystoidea, and both Pirimelidae and Thiidae into Portunoidea.

Cancroidea. Retrieved May, 08 2021, from en.wikipedia.org/wiki/Cancroidea.

Cancridae is a family of crabs. It comprises six extant genera, and ten exclusively fossil genera, in two subfamilies:

† =no extant species

Cancridae. Retrieved May, 08 2021, from en.wikipedia.org/wiki/Cancridae.