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Pacifastacus is a genus of crayfish native to western North America (USA and Canada), containing six species, two of which are extinct:[1]
Pacifastacus is a genus of crayfish native to western North America (USA and Canada), containing six species, two of which are extinct:
†Pacifastacus chenoderma (fossil: Miocene – Pliocene) Pacifastacus connectens Pacifastacus fortis – Shasta crayfish Pacifastacus gambelii Pacifastacus leniusculus – signal crayfish †Pacifastacus nigrescens – Sooty crayfish