Cancroidea is a superfamily of
crab
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the ...
s, comprising the families
Atelecyclidae
Atelecyclidae is a family of crabs belonging to the superfamily Cancroidea, and currently contains eight genera of which two are extinct. However, the genera other than '' Atelecyclus'' and '' Pseudocorystes'' do not belong in the Cancroidea, and ...
and
Cancridae
Cancridae is a family of crabs. It comprises six extant genera, and ten exclusively fossil genera, in two subfamilies:
Extant Genera
Cancrinae Latreille, 1802
*'' Anatolikos'' Schweitzer & Feldmann, 2000
* ''Cancer'' Linnaeus, 1758
*''Glebocarci ...
.
[ http://boletinsgm.igeolcu.unam.mx/bsgm/vols/epoca04/6502/%2810%29Osso.pdf] Four other families have been separated into new superfamilies:
Cheiragonidae
Cheiragonidae is a small family of crabs, sometimes called '' helmet crabs'', placed in its own superfamily, Cheriagonoidea. It comprises three extant species, '' Erimacrus isenbeckii'', '' Telmessus acutidens'' and ''Telmessus cheiragonus'', the ...
into
Cheiragonoidea
Cheiragonidae is a small family (biology), family of crabs, sometimes called ''helmet crabs'', placed in its own Taxonomic rank, superfamily, Cheriagonoidea. It comprises three extant species, ''Horsehair crab, Erimacrus isenbeckii'', ''Telmessus ...
,
Corystidae
Corystidae is a family of crabs, in its own superfamily, Corystoidea. It includes what was once thought to be the oldest Eubrachyuran fossil, '' Hebertides jurassica'', thought to be dating from the Bathonian (Middle Jurassic); the species was su ...
into
Corystoidea
Corystidae is a family of crabs, in its own superfamily, Corystoidea. It includes what was once thought to be the oldest Eubrachyuran fossil, '' Hebertides jurassica'', thought to be dating from the Bathonian ( Middle Jurassic); the species was ...
, and both
Pirimelidae and
Thiidae into
Portunoidea
__NOTOC__
Portunoidea is a superfamily of crabs that includes the family Portunidae, the swimming crabs. Which other crab families are also placed here is a matter of some contention, and may be revised following molecular phylogenetic analyses.
...
.
Montezumellidae has been moved from Cancroidea to his own Superfamily Montezumelloidea Ossó & Domínguez, 2019 (Zootaxa, 4623 (1): 175–188).
References
Crabs
Arthropod superfamilies
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