MP-173 (Eocene of the United States)

Where: Park County, Wyoming (44.5° N, 108.7° W: paleocoordinates 49.3° N, 91.5° 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: G. F. Gunnell and P. D. Gingerich. 1991. Systematics and Evolution of Late Paleocene and Early Eocene Oxyaenidae (Mammalia, Creodonta) in the Clarks Fork Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 28(7):141-180 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 15707: authorized by John Alroy, entered by John Alroy on 21.09.1998, edited by Leah Gannon and Will Clyde

Creative Commons license: CC BY (attribution)

Taxonomic list

• may be in Big Horn County, Wa-5
Reptilia
 Crocodylia - Alligatoridae
Allognathosuchus sp.1 Mook 1921 crocodilian
 Squamata -
Mammalia
 Cimolesta - Coryphodontidae
Coryphodon armatus1 Cope 1872 pantodont
 Cimolesta - Esthonychidae
Esthonyx bisulcatus1 Cope 1874 tillodont
 Macroscelidea - Apheliscidae
Apheliscus insidiosus1 Cope 1874 elephant shrew
 Condylarthra - Hyopsodontidae
Hyopsodus simplex1 Loomis 1905 condylarth
Hyopsodus pauxillus1 Gingerich 1994 condylarth
Hyopsodus powellianus1 Cope 1884 condylarth
 Acreodi - Mesonychidae
Pachyaena ossifraga1 Cope 1874 condylarth
 Theriamorpha - Metacheiromyidae
Palaeanodon sp.1 Matthew 1918 placental
 Creodonta - Hyaenodontidae
Prototomus robustus1 Matthew and Granger 1915 creodont
Prototomus secundarius1 Cope 1875 creodont
 Creodonta - Oxyaenidae
Oxyaena forcipata Cope 1874 creodont
 Theriamorpha -
Miacis exiguus1 Matthew and Granger 1915 placental
 Theriamorpha - Viverravidae
Viverravus acutus2 Matthew and Granger 1915 placental
Didymictis protenus2 Cope 1874 placental
 Perissodactyla - Equidae
"Hyracotherium pernix" = Arenahippus pernix1
"Hyracotherium pernix" = Arenahippus pernix1 Marsh 1876 horse
 Perissodactyla -
Homogalax protapirinus1, "Hyracotherium cristatum" = Systemodon tapirinus1
Homogalax protapirinus1 Wortman 1896 odd-toed ungulate
"Hyracotherium cristatum" = Systemodon tapirinus1 Cope 1875 odd-toed ungulate
 Theriamorpha - Phenacodontidae
Copecion brachypternus1 Cope 1882 condylarth
Phenacodus intermedius1 Granger 1915 condylarth
Phenacodus ? vortmani1 Cope 1880 condylarth
Phenacodus trilobatus1 Cope 1881 condylarth
 Artiodactyla - Diacodexeidae
Bunophorus etsagicus1 Cope 1882 even-toed ungulate
Diacodexis metsiacus1 Cope 1882 even-toed ungulate
 Procreodi - Arctocyonidae
Chriacus gallinae1 Matthew and Granger 1915 condylarth
 Theriamorpha - Pantolestoidae
Palaeosinopa veterrima1 Matthew 1901 placental
 Theriamorpha - Erinaceoidae
Leipsanolestes siegfriedti1 Simpson 1928 placental
 Rodentia - Ischyromyidae
Paramys copei1 Loomis 1907 rodent
 Primates - Notharctidae
Cantius abditus1 Gingerich and Simons 1977 primate
 Primates - Omomyidae
Teilhardina crassidens1 Bown and Rose 1987 tarsier
 Primates - Microsyopidae
Microsyops angustidens1 Matthew 1915 primate