Pacifastacus

Pacifastacus
	Pacifastacus leniusculus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Family:	Astacidae
Genus:	Pacifastacus; Bott, 1950
Type species
	Astacus Klamathensis; Stimpson, 1857

Pacifastacus is a genus of crayfish native to western North America (USA and Canada), containing six species, two of which are extinct:^[1]

†Pacifastacus chenoderma (fossil: Miocene – Pliocene)
Pacifastacus connectens
Pacifastacus fortis – Shasta crayfish
Pacifastacus gambelii
Pacifastacus leniusculus – signal crayfish
†Pacifastacus nigrescens – Sooty crayfish

References

^ James W. Fetzner Jr. (January 14, 2008). "Genus Pacifastacus Bott, 1950". Crayfish Taxon Browser. Carnegie Museum of Natural History. Archived from the original on June 11, 2011. Retrieved May 26, 2010.

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[1] James W. Fetzner Jr. (January 14, 2008). "Genus Pacifastacus Bott, 1950". Crayfish Taxon Browser. Carnegie Museum of Natural History. Archived from the original on June 11, 2011. Retrieved May 26, 2010.

[1]

Pacifastacus

Pacifastacus leniusculus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Family:	Astacidae
Genus:	Pacifastacus Bott, 1950
Type species
Astacus Klamathensis Stimpson, 1857