MP-17 (Eocene of the United States)

Where: Park County, Wyoming (44.5° N, 108.4° W: paleocoordinates 49.1° N, 91.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Willwood Formation, Early/Lower Eocene (55.8 - 48.6 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

PaleoDB collection 15682: 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-4
Reptilia
 Testudines -
Testudines indet.1 Batsch 1788 turtle
 Crocodylia - Alligatoridae
Allognathosuchus sp.1 Mook 1921 crocodilian
Mammalia
 Primates - Omomyidae
Tetonius sp.1 Matthew 1915 tarsier
 Primates - Notharctidae
Cantius mckennai1 Gingerich and Simons 1977 primate
 Cimolesta - Coryphodontidae
Coryphodon eocaenus1 Owen 1846 pantodont
 Cimolesta - Pantolestidae
Palaeosinopa sp.1 Matthew 1901 eutherian
 Dermoptera -
Plagiomene multicuspis1 Matthew 1918 colugo
 Rodentia - Ischyromyidae
Paramys sp.1 Leidy 1871 rodent
 Perissodactyla -
Homogalax protapirinus1 Wortman 1896 odd-toed ungulate
 Perissodactyla - Palaeotheriidae
Hyracotherium sp.1 Owen 1841 odd-toed ungulate
 Creodonta - Oxyaenidae
Palaeonictis occidentalis1 Osborn 1892 creodont
Oxyaena intermedia2 Denison 1938 creodont
 Ferae - Viverravidae
Viverravus rosei3 Polly 1997 placental
"Viverravus bowni" = Viverravus laytoni1 Gingerich and Winkler 1985 placental
Viverravus acutus3 Matthew and Granger 1915 placental
 Macroscelidea - Apheliscidae
Haplomylus scottianus1 Gingerich 1994 elephant shrew
 Trogontia - Esthonychidae
Esthonyx spatularius1 Cope 1880 tillodont
 Ungulata - Hyopsodontidae
Hyopsodus latidens1 Denison 1937 condylarth
 Ungulata - Phenacodontidae
Ectocion osbornianus1 Cope 1882 condylarth
Phenacodus trilobatus1 Cope 1881 condylarth
 Hyaenodonta - Hyaenodontidae
Prototomus robustus Matthew and Granger 1915 eutherian