CM 676 (Eocene of the United States)

Where: Big Horn County, Wyoming (44.5° N, 108.0° W: paleocoordinates 49.2° N, 90.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Primary reference: D. W. Krause. 1982. Multituberculates from the Wasatchian Land-Mammal Age, Early Eocene, of Western North America. Journal of Paleontology 56(2):271-294 [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 15465: authorized by John Alroy, entered by John Alroy on 27.09.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• county line is about 25 mi W of Basin, making county assignment almost certain
Mammalia
 Ungulata - Diacodexeidae
Diacodexis primus Krishtalka and Stucky 1985 even-toed ungulate
 Multituberculata - Neoplagiaulacidae
Ectypodus tardus Jepsen 1940 multituberculate