FG-87 (Eocene of the United States)

Where: Big Horn County, Wyoming (44.5° N, 108.4° W: paleocoordinates 49.3° N, 91.2° 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 15593: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Leah Gannon

Creative Commons license: CC BY (attribution)

Taxonomic list

• Wa-3
Reptilia
 Crocodylia - Alligatoridae
Allognathosuchus sp.1 Mook 1921 crocodilian
Mammalia
 Cimolesta - Esthonychidae
Esthonyx bisulcatus1 Cope 1874 tillodont
 Macroscelidea - Apheliscidae
Haplomylus scottianus1 Gingerich 1994 elephant shrew
 Creodonta - Oxyaenidae
Oxyaena intermedia2 Denison 1938 creodont
 Creodonta - Hyaenodontidae
Arfia opisthotoma Matthew 1901 creodont
 Theriamorpha - Phenacodontidae
Phenacodus trilobatus1 Cope 1881 condylarth
 Perissodactyla - Palaeotheriidae
Hyracotherium sp.1 Owen 1841 odd-toed ungulate
 Perissodactyla -
Homogalax protapirinus1 Wortman 1896 odd-toed ungulate
 Primates - Notharctidae
Cantius mckennai1 Gingerich and Simons 1977 primate