Pacifastacus
| Pacifastacus leniusculus | |
|---|---|
|  | |
| Pacifastacus leniusculus | |
| Scientific classification | |
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Subphylum: | Crustacea | 
| Class: | Malacostraca | 
| Order: | Decapoda | 
| Infraorder: | Astacidea | 
| Family: | Astacidae | 
| Genus: | Pacifastacus Bott, 1950 | 
| Type species | |
| Astacus Klamathensis Stimpson, 1857 | |
Pacifastacus is a genus of crayfish native to western North America, containing the following six species (DD = Data Deficient; CR = Critically Endangered; LC = Least Concern; EX = Extinct):[1][2]
- Pacifastacus chenoderma (fossil: Miocene – Pliocene)
- Pacifastacus connectens  
- Pacifastacus fortis  – shasta crayfish – shasta crayfish
- Pacifastacus gambelii  
- Pacifastacus leniusculus  – signal crayfish – signal crayfish
- Pacifastacus nigrescens  
References
- ↑ James W. Fetzner, Jr. (January 14, 2008). "Genus Pacifastacus Bott, 1950". Crayfish Taxon Browser. Carnegie Museum of Natural History. Retrieved May 26, 2010.
- ↑ "Search". IUCN Red List. International Union for Conservation of Nature. Retrieved October 9, 2010.
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