Bridger Formation

Usage of Geologic Unit Name:
Bridger Formation (CO*,UT*,WY*)
Geologic Province:
Green River basin*
Areal Extent:

Type Locality:
Not designated; named for Fort Bridger, Uinta Co., WY (Hayden, 1869).

(alphabetical): Blacks Fork Member (WY), Twin Buttes Member (WY), Whiskey Butte Bed (WY).

Unit Name History:
Named "Bridger group" (Hayden, 1869). Overview; Revised (Matthew, 1909). Revised (Nace, 1939). Areal limits (Roehler, 1973; Cashion and Donnell, 1974). Overview; Revised (Sullivan, 1980).



Hayden, F.V., 1869, Preliminary field report [third annual] of
Colorado and New Mexico: U.S. Geological Survey, 155 p.

Matthew, W.D., 1909, The Carnivora and Insectivora of the Bridger basin, middle Eocene: American Museum of Natural History Memoirs, v. 9, pt. 6, p. 289-576.

Nace, R.L., 1939, Geology of the northwest part of the Red Desert, Sweetwater and Fremont Counties, Wyoming: Wyoming Geological Survey Bulletin, no. 27, 51 p.

Roehler, H.W., 1973, Stratigraphy of the Washakie Formation in the Washakie basin, Wyoming: U.S. Geological Survey Bulletin, 1369, p. 1-40.

Cashion, W.B. and Donnell, J.R., 1974, Revision of nomenclature of the upper part of the Green River Formation, Piceance Creek basin, Colorado, and eastern Uinta basin, Utah, IN Contributions to stratigraphy: U.S. Geological Survey Bulletin, 1394-G, p. G1-G9.

Sullivan, Raymond, 1980, A stratigraphic evaluation of the Eocene rocks of southwestern Wyoming: Wyoming Geological Survey Report of Investigations, no. 20, 50 p.

Murphey, Paul C; Torick, Lisa L; Bray, Emily S; Chandler, Robert; Evanoff, Emmett, 2001, Taphonomy, fauna, and depositional environment of the OmomysQuarry, an unusual accumulation from the Bridger Formation (middleEocene) of southwestern Wyoming (USA): In, Eocene biodiversity; unusual occurrences and rarely sampled habitats, Gunnell, Gregg F. (ed), Topics in Geobiology, vol.18, p.361-402.

Murphey, Paul Christopher, 2001, Stratigraphy, fossil distribution, and depositional environments of the upper Bridger Formation (middle Eocene) of southwestern Wyoming, and the taphonomy of an unusual Bridger microfossil assemblage: Unpublished dissertation, 346 p.

Buchheim, H. Paul; Brand, Leonard R., Goodwin, H. Thomas, 2000, Lacustrine to fluvial floodplain deposition in the Eocene Bridger Formation: Palaeogeography, Palaeoclimatology, Palaeoecology, vol.162, no.1-2, p.191-209.

Murphey, Paul C; Lester, Alan; Bohor, Bruce; Robinson, Peter, Evanoff, Emmett, 1999, Larson, Edwin 40Ar/39Ar dating of volcanic ash deposits in the Bridger Formation (middle Eocene), southwestern Wyoming: Geological Society of America, Abstracts with Programs, v. 31, p. 233.

Gunnell, Gregg F., 1998, Mammalian fauna from the lower Bridger Formation (Bridger A, early middle Eocene) of the southern Green River basin, Wyoming Contributions from the Museum of Paleontology. University of Michigan, vol.30, no.3, pp.83-130.

Brand, L. R., 1997, Mapping of widespread marker beds in Unit B of the middle Eocene Bridger Formation, southwestern Wyoming: Journal of Vertebrate Paleontology, vol.17, no.3, Suppl., p. 33.

Alexander, John P., 1996, New extraction and preparation techniques for well preserved Bridger Formation fossils: Journal of Vertebrate Paleontology, vol.16, no.3, Suppl., p.19.

Nolf, D., 1991, Palaeontology and geology of the Bridger Formation, southern Green River basin, S.W. Wyoming, U.S.A.; VIII, Fish otoliths from the Twin Buttes Member, upper Bridger Formation: (Mededelingen van de Werkgroep voor Tertiaire en Kwartaire Geologie): Contributions to Tertiary and Quaternary Geology, vol.28, no.1, p. 29-33.

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Last modified: 1/7/2011