Graybull (CM 150) (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 15634: authorized by John Alroy, entered by John Alroy on 21.09.1998, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• county line is about 25 mi W of Basin, making county assignment almost certain
Mammalia
 Ungulata - Hyopsodontidae
Hyopsodus simplex2 Loomis 1905 condylarth
Hyopsodus loomisi2 McKenna 1960 condylarth
 Ungulata - Diacodexeidae
Diacodexis primus1 Krishtalka and Stucky 1985 even-toed ungulate
Diacodexis primus1 Krishtalka and Stucky 1985 even-toed ungulate
"lineage segment Diacodexis secans-primus"
 Multituberculata -
Neoliotomus ultimus Granger and Simpson 1928 multituberculate