Wikipedia
Pacifastacus
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):
- Pacifastacus chenoderma (fossil: Miocene – Pliocene)
- Pacifastacus connectens
- Pacifastacus fortis – shasta crayfish
- Pacifastacus gambelii
- Pacifastacus leniusculus – signal crayfish
- Pacifastacus nigrescens