MP-149 (Eocene of the United States)

Where: Park County, Wyoming (44.6° N, 108.6° W: paleocoordinates 49.4° N, 91.4° 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. Polly. 1997. Ancestry and Species Definition in Paleontology: A Stratocladistic Analysis of Paleocene-Eocene Viverravidae (Mammalia, Carnivora) from Wyoming. Contributions from the Museum of Paleontology, University of Michigan 30(1):1-53 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 15699: 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-3
Mammalia
 Cimolesta - Coryphodontidae
Coryphodon radians Cope 1872 pantodont
 Cimolesta - Esthonychidae
Esthonyx bisulcatus Cope 1874 tillodont
 Condylarthra - Hyopsodontidae
Hyopsodus latidens Denison 1937 condylarth
 Macroscelidea - Apheliscidae
Haplomylus speirianus Cope 1880 elephant shrew
Haplomylus speirianus Cope 1880 elephant shrew
 Theriamorpha - Phenacodontidae
Ectocion osbornianus Cope 1882 condylarth
Phenacodus intermedius Granger 1915 condylarth
Phenacodus ? trilobatus Cope 1881 condylarth
 Perissodactyla - Equidae
"Hyracotherium aemulor" = Arenahippus aemulor
"Hyracotherium aemulor" = Arenahippus aemulor Gingerich 1991 horse
 Perissodactyla -
Homogalax protapirinus Wortman 1896 odd-toed ungulate
 Procreodi - Arctocyonidae
Thryptacodon antiquus Matthew and Granger 1915 condylarth
 Artiodactyla - Diacodexeidae
Diacodexis metsiacus Cope 1882 even-toed ungulate
 Theriamorpha - Viverravidae
Didymictis leptomylus Cope 1880 placental
 Theriamorpha - Metacheiromyidae
Palaeanodon sp. Matthew 1918 placental
 Creodonta - Hyaenodontidae
Arfia opisthotoma Matthew 1901 creodont
 Theriamorpha - Pantolestoidae
Palaeosinopa lutreola Matthew 1918 placental
 Rodentia - Ischyromyidae
Paramys taurus Korth 1984 rodent
Paramys copei Loomis 1907 rodent
 Primates - Notharctidae
Cantius mckennai Gingerich and Simons 1977 primate
Reptilia
 Testudines -
Testudines indet. Batsch 1788 turtle
 Crocodylia - Alligatoridae
Allognathosuchus sp. Mook 1921 crocodilian