Phylum : Arthropoda
Subphylum : Diantennata
Classis : Crustacea
Subclassis : Malacostraca
Infraclassis : Eumalacostraca
Superorder : Eucarida
Order : Decapoda
Suborder : Reptantia
Infraorder : Brachyura
Section : Brachyryncha
Section : Anomura
Superfamily : Paguroidea
Click on the small crab to go to the families
Section : Brachyryncha (True Crabs)
Superfamily : Gecarcinoidea
Gecarcinidae
Genera : Cardisoma
Superfamily : Grapsidoidea
Grapsidae
Genera : Grapsus, Geograpsus, Metopograpsus, Pachygrapsus, Percnon.
Sesarmidae
Genera : Neosarmatium, Percnon, Selatium, Sesarma, Varuna.
Ocypodidae
Genera : Ocypode (Ghost Crabs), Uca (Fiddler Crabs), Macrophthalmus
Superfamily : Portunoidea
Portunidae (Swimming Crabs)
Genera : Charybdis, Portunus, Scylla, Thalamita
Superfamily : Xanthoidea
Menippididae
Genera : Eriphia, Ozius
Pilumnidae
Genera : Eurycarcinus, Pilumnus
Xanthidae
Genera : Epixanthus, Xantho, Zosimus
Section : Anomura
Superfamily : Paguroidea (Hermit Crabs)
Coenobitidae
Genera : Coenobita, Birgus(Coconut or Robber Crab)
Diogenidae
Genera : Calcinus, Clibanarius, Dardanus, Trizopagurus
Superfamily : ? (False Crabs)
Porcellanidae
Genera : Porcellanus, Petrolisthes