MP-138 (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. 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 15695: 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-4
Mammalia
 Theriamorpha - Stylinodontidae
 Dermoptera -
Plagiomene multicuspis1 Matthew 1918 colugo
 Primates - Notharctidae
Cantius trigonodus1 Matthew 1915 primate
 Primates - Omomyidae
Tetonius matthewi1 Bown and Rose 1987 tarsier
originally entered as "Tetonius mathewi"
 Rodentia - Ischyromyidae
Paramys taurus1 Korth 1984 rodent
 Creodonta - Hyaenodontidae
Arfia opisthotoma1 Matthew 1901 creodont
Prototomus martis Gingerich and Deutsch 1989 creodont
 Theriamorpha -
Vulpavus australis1 Matthew and Granger 1915 placental
Vassacyon promicrodon1 Wortman and Matthew 1899 placental
 Theriamorpha - Viverravidae
Viverravus politus2 Matthew and Granger 1915 placental
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 -
"Hyracotherium cristatum" = Systemodon tapirinus1, Homogalax protapirinus1
"Hyracotherium cristatum" = Systemodon tapirinus1 Cope 1875 odd-toed ungulate
Homogalax protapirinus1 Wortman 1896 odd-toed ungulate
 Theriamorpha - Phenacodontidae
Ectocion osbornianus1 Cope 1882 condylarth
Phenacodus intermedius1 Granger 1915 condylarth
 Artiodactyla - Diacodexeidae
"Diacodexis robustus" = Bunophorus robustus1, Diacodexis metsiacus1
"Diacodexis robustus" = Bunophorus robustus1 Sinclair 1914 even-toed ungulate
Diacodexis metsiacus1 Cope 1882 even-toed ungulate
 Procreodi - Arctocyonidae
Thryptacodon antiquus1 Matthew and Granger 1915 condylarth
 Macroscelidea - Apheliscidae
Haplomylus scottianus1 Gingerich 1994 elephant shrew
 Condylarthra - Hyopsodontidae
Hyopsodus latidens1 Denison 1937 condylarth
 Cimolesta - Esthonychidae
Esthonyx bisulcatus1 Cope 1874 tillodont
 Cimolesta - Coryphodontidae
Coryphodon radians1 Cope 1872 pantodont
Reptilia
 Crocodylia - Alligatoridae
Allognathosuchus sp.1 Mook 1921 crocodilian
Gastropoda
  -
Gastropoda indet.1 Cuvier 1795 snail