North of Cedar Mountain (Eocene of the United States)

Where: Sweetwater County, Wyoming (41.7° N, 109.0° W: paleocoordinates 45.6° N, 95.1° W)

• coordinate based on political unit

When: lower Member (Bridger Formation), Bridgerian (50.3 - 46.2 Ma)

Environment/lithology: terrestrial

Primary reference: R. M. West. 1973. Review of the North American Eocene and Oligocene Apatemyidae (Mammalia, Insectivora). Special Publications, Texas Tech University Museum 3 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 16294: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• older "Bridger C" records from 10 or more miles north of Cedar Mountain are presumably Bridger B, see Gazin 1976 and map of West 1976a
Mammalia
 Rodentia - Ischyromyidae
Thisbemys corrugatus n. sp.3 Wood 1959 rodent
from north of Cedar Mountain in "Bridger C"; but from the lower Bridger according to Gazin 1976
 Perissodactyla - Equidae
Orohippus sp.2 Marsh 1872 horse
from the "C horizon"; not clear if O. progressus, O. sylvaticus, or both are present
 Ungulata -
Helohyus plicodon4 Marsh 1872 even-toed ungulate
Bridger B
 Insectivora - Apatemyidae
Apatemys sp.1 Marsh 1872 insectivoran