Cambaridae

Cambaridae Temporal range: Late Jurassic–Recent PreꞒ Ꞓ O S D C P T J K Pg N
Procambarus clarkii
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Superfamily:	Astacoidea
Family:	Cambaridae Hobbs, 1942
Genera
Barbicambarus Hobbs, 1969 Bouchardina Hobbs, 1977 Cambarellus Ortmann, 1905 Cambarus Erichson, 1846 Creaserinus Hobbs, 1973 Distocambarus Hobbs, 1981 Fallicambarus Hobbs, 1969 Faxonella Creaser, 1933 Faxonius Ortmann, 1905 Hobbseus Fitzpatrick & Payne, 1968 Lacunicambarus Hobbs, 1969 Orconectes Cope, 1872 Procambarus Ortmann, 1905 Troglocambarus Hobbs, 1942

The Cambaridae are the largest of the four families of freshwater crayfish, with over 400 species.^[1] Most of the species in the family are native to the United States east of the Great Divide and Mexico, but fewer range north to Canada, and south to Guatemala and Honduras. Three live on the island of Cuba. The species in the genus Cambaroides are only found outside North America, as they are restricted to eastern Asia.^[2]

A few species, including the invasive Procambarus clarkii and Faxonius rusticus, have been introduced to regions far outside their native range (both in North America and other continents). Conversely, many species have tiny ranges and are seriously threatened; a few are already extinct.^[2]

A 2006 molecular study suggested that the family Cambaridae may be paraphyletic, with the family Astacidae nested within it, and the status of the genus Cambaroides remains unclear.^[3]

The oldest fossils of the family are known from the Late Jurassic Morrison Formation of western North America.^[4]

• Media related to Cambaridae at Wikimedia Commons
• Data related to Cambaridae at Wikispecies

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