MP-75 (Eocene of the United States)

Where: Park County, Wyoming (44.5° N, 108.8° W: paleocoordinates 49.3° N, 91.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithified siliciclastic sediments

Size classes: macrofossils, mesofossils

Reposited in the UMMP

Collection methods: surface (float), surface (in situ),

Primary reference: P. D. Gingerich and H. A. Deutsch. 1989. Systematics and Evolution of Early Eocene Hyaenodontidae (Mammalia, Creodonta) in the Clarks Fork Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 27(13):327-391 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 15689: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Leah Gannon and Will Clyde

Creative Commons license: CC BY (attribution)

Taxonomic list

• may be in Big Horn County

•Wa-6

Mammalia
 Cimolesta - Coryphodontidae
Coryphodon eocaenus1 Owen 1846 pantodont
 Condylarthra - Hyopsodontidae
Hyopsodus miticulus1 Cope 1874 condylarth
Hyopsodus minor1 Loomis 1905 condylarth
 Creodonta - Hyaenodontidae
Prototomus secundarius Cope 1875 creodont
 Creodonta -
Prolimnocyon sp.1 Matthew and Granger 1915 creodont
 Creodonta - Oxyaenidae
Ambloctonus cf. priscus2 Matthew and Granger 1915 creodont
 Perissodactyla - Palaeotheriidae
Hyracotherium sp.1 Owen 1841 odd-toed ungulate
 Perissodactyla -
Heptodon sp.1 Cope 1882 odd-toed ungulate
 Artiodactyla - Diacodexeidae
Bunophorus sp.1 Sinclair 1914 even-toed ungulate
 Procreodi - Arctocyonidae
Anacodon sp.1 Cope 1882 condylarth
 Primates - Notharctidae
Cantius abditus1 Gingerich and Simons 1977 primate