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Oregon floater
Anodonta oregonensis
NatureServe conservation status
Global (G-rank): G5
State (S-rank): SNA
External links
Species range
This species is known from historical records in three counties in north-central Utah: Davis, Salt Lake (probably), and Utah counties (Ingersoll 1877, Chamberlin and Jones 1929, Jones 1940). Yarrow (1875), in the first report of the species from Utah, stated that the species was "[c]ollected from the Sevier River, Utah"; however, this is a rather imprecise locality, the Sevier River flowing through at least six Utah counties.
Habitat
Ingersoll (1877), reporting this species from Utah Lake wrote: "Found ... in the brackish water at the Southern extremity of Utah Lake in the soft mud." No other habitat information has been mentioned by authors discussing this species in Utah.
Threats or limiting factors
This species, if extant in Utah, is believed to be seriously threatened. Dewatering as well as alteration and degradation of aquatic habitats in north-central Utah, especially along the heavily populated and developed Wasatch Front in the very areas of its historical occurrence in Utah, are almost certainly factors that have led to its decline, if not extirpation, in this state.
