Prosopium

Prosopium Temporal range: Late Miocene to Recent [1] PreꞒ Ꞓ O S D C P T J K Pg N
Prosopium cylindraceum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Salmoniformes
Family:	Salmonidae
Subfamily:	Coregoninae
Genus:	Prosopium D. S. Jordan, 1878
Type species
Coregonus cylindraceus Pennant, 1784

Prosopium is a genus of freshwater whitefishes found in North America and parts of eastern Russia. It contains three fairly widespread species: the round whitefish, the pygmy whitefish, and the mountain whitefish. The remaining species, the Bonneville cisco, the Bonneville whitefish, and the Bear Lake whitefish are endemic to Bear Lake.

Species

There are currently six recognized species in this genus: ^[2]

Image	Scientific name	Common name	Distribution
	Prosopium abyssicola (Snyder, 1919)	Bear Lake whitefish	Bear Lake on the Utah-Idaho border
	Prosopium coulterii (C. H. Eigenmann & R. S. Eigenmann, 1892)	Pygmy whitefish	mountain streams and lakes in western North America, it also has isolated populations in Lake Superior and in Ekityki Lake, Chukchi Peninsula.
	Prosopium cylindraceum (Pennant, 1784)	Round whitefish	Alaska to New England, including the Great Lakes
	Prosopium gemmifer (Snyder, 1919)	Bonneville cisco	Bear Lake on the Utah-Idaho border
	Prosopium spilonotus (Snyder, 1919)	Bonneville whitefish	Bear Lake on the Utah-Idaho border.
	Prosopium williamsoni (Girard, 1856)	Mountain whitefish	Mackenzie River drainage in Northwest Territories, Canada south through western Canada and the northwestern USA in the Pacific, Hudson Bay and upper Missouri River basins to the Truckee River drainage in Nevada and Sevier River drainage in Utah

The extinct species † Prosopium prolixus Kimmel, 1975 is known from Late Miocene and Early Pliocene-aged Deer Butte Formation of Oregon and the Glenns Ferry Formation of Idaho. ^{[3] [4]}

References

1. Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 363: 1–560. Retrieved 8 January 2008.
2. Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Prosopium". FishBase . February 2012 version.
3. Smith, Gerald R.; Kimmel, P. G. (1975). "Fishes of the Pliocene Glenns Ferry Formation, Southwest Idaho; Fishes of the Miocene - Pliocene Deer Butte Formation, Southeast Oregon Claude W. Hibbard Memorial Volume V". Papers on Paleontology (14): 1–87.
4. Smith, Gerald R.; Morgan, N.; Gustafson, E. (2000). "Fishes of the Mio-Pliocene Ringold Formation, Washington: Pliocene Capture of the Snake River by the Columbia River". Papers on Paleontology (32): 1–47.

• "Prosopium". Integrated Taxonomic Information System . Retrieved 6 June 2006.
• Molly Hallock and Paul E. Mongillo, Washington Department of Fish and Wildlife "Washington State Status Report" (1998).