MP-59 (Eocene of the United States)

Where: Wyoming (44.4° N, 108.7° W: paleocoordinates 49.2° N, 91.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)

• Wa-6

• 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: W. C. Clyde. 1997. Stratigraphy and mammalian paleontology of the McCullough Peaks, northern Bighorn Basin, Wyoming: Implications for biochronology, basin development, and community reorganization across the Paleocene-Eocene boundary. PhD Thesis, University of Michigan [W. Clyde/W. Clyde/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 46699: authorized by Will Clyde, entered by Will Clyde on 24.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Theriamorpha - Stylinodontidae
 Theriamorpha - Leptictidae
Palaeictops bicuspis Cope 1880 eutherian
 Rodentia - Ischyromyidae
? Paramys v. large sp. Leidy 1871 rodent
Paramys taurus Korth 1984 rodent
 Primates - Microsyopidae
? Niptomomys sp. McKenna 1960 primate
Microsyops latidens Cope 1882 primate
 Primates - Notharctidae
Cantius frugivorus Cope 1875 primate
Cantius abditus Gingerich and Simons 1977 primate
 Primates - Paromomyidae
Phenacolemur sp. Matthew 1915 primate
 Primates - Omomyidae
Absarokius abbotti Loomis 1906 tarsier
Absarokius metoecus Bown and Rose 1987 tarsier
originally entered as "Absarokius motoecus"
 Perissodactyla -
Heptodon calciculus, "Hyracotherium cristatum" = Systemodon tapirinus
Heptodon calciculus Cope 1880 odd-toed ungulate
"Hyracotherium cristatum" = Systemodon tapirinus Cope 1875 odd-toed ungulate
 Perissodactyla - Equidae
"Hyracotherium pernix" = Arenahippus pernix
"Hyracotherium pernix" = Arenahippus pernix Marsh 1876 horse
 Theriamorpha - Phenacodontidae
Phenacodus vortmani Cope 1880 condylarth
 Artiodactyla - Diacodexeidae
Diacodexis metsiacus Cope 1882 even-toed ungulate
 Procreodi - Arctocyonidae
Anacodon ursidens Cope 1882 condylarth
Chriacus gallinae Matthew and Granger 1915 condylarth
 Creodonta - Oxyaenidae
Oxyaena forcipata Cope 1874 creodont
 Creodonta - Hyaenodontidae
Prototomus secundarius Cope 1875 creodont
 Theriamorpha - Viverravidae
Didymictis protenus Cope 1874 placental
Viverravus acutus Matthew and Granger 1915 placental
 Theriamorpha -
Miacis petilus Gingerich 1983 placental
Vassacyon promicrodon Wortman and Matthew 1899 placental
Vulpavus australis Matthew and Granger 1915 placental
 Acreodi - Mesonychidae
Pachyaena gracilis Matthew and Granger 1915 condylarth
 Condylarthra - Hyopsodontidae
Hyopsodus minor Loomis 1905 condylarth
Hyopsodus lysitensis Gingerich 1974 condylarth
 Cimolesta - Coryphodontidae
Coryphodon lobatus Cope 1877 pantodont
 Cimolesta - Esthonychidae
Esthonyx bisulcatus Cope 1874 tillodont
 Theriamorpha - Herpetotheriidae
"Peratherium marsupium" = Herpetotherium marsupium
"Peratherium marsupium" = Herpetotherium marsupium Troxell 1923 marsupial
Reptilia
 Squamata - Anguidae
Glyptosaurus sp. Marsh 1871 squamates
 Loricata -
"Crocodilia indet." = Crocodylia
"Crocodilia indet." = Crocodylia Owen 1842 crocodilian
Aves
  -
Aves indet. Linnaeus 1758 bird
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843 gar