MP-211 (Eocene of the United States)

Where: Wyoming (44.7° N, 108.8° W: paleocoordinates 49.5° N, 91.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• Wa-2

• 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 46780: authorized by Will Clyde, entered by Will Clyde on 24.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843 gar
Reptilia
 Crocodylia - Alligatoridae
Allognathosuchus sp. Mook 1921 crocodilian
 Squamata - Anguidae
Melanosaurus sp. Gilmore 1928 lizard
Mammalia
 Cimolesta - Coryphodontidae
Coryphodon eocaenus Owen 1846 pantodont
 Primates - Microsyopidae
Arctodontomys wilsoni Szalay 1969 primate
 Primates - Omomyidae
Tetonius matthewi Bown and Rose 1987 tarsier
originally entered as "Tetonius mathewi"
 Primates - Notharctidae
Cantius mckennai Gingerich and Simons 1977 primate
 Primates - Paromomyidae
Phenacolemur sp. Matthew 1915 primate
 Glires -
 Perissodactyla -
Cardiolophus radinskyi Gingerich 1991 odd-toed ungulate
 Perissodactyla - Equidae
"Hyracotherium grangeri" = Sifrhippus grangeri
"Hyracotherium grangeri" = Sifrhippus grangeri Gingerich 1989 horse
 Creodonta - Oxyaenidae
Dipsalidictis transiens Matthew and Granger 1915 creodont
Oxyaena gulo Matthew and Granger 1915 creodont
Oxyaena intermedia Denison 1938 creodont
 Ferae - Viverravidae
Didymictis protenus Cope 1874 placental
 Ferae -
Uintacyon rudis Rose 1981 placental
 Carnivora -
Vulpavus australis Matthew and Granger 1915 carnivoran
 Macroscelidea - Apheliscidae
Haplomylus speirianus Cope 1880 elephant shrew
Apheliscus chydaeus Gingerich 1994 elephant shrew
 Tillodontia - Esthonychidae
Esthonyx spatularius Cope 1880 tillodont
 Tribosphenida - Arctocyonidae
Thryptacodon antiquus Matthew and Granger 1915 condylarth
 Ungulata - Hyopsodontidae
Hyopsodus loomisi McKenna 1960 condylarth
 Ungulata - Diacodexeidae
Diacodexis metsiacus Cope 1882 even-toed ungulate
 Ungulata - Phenacodontidae
Ectocion osbornianus Cope 1882 condylarth
Phenacodus intermedius Granger 1915 condylarth
 Insectivora - Apatemyidae
Apatemys sp. Marsh 1872 insectivoran
 Hyaenodonta - Hyaenodontidae
Arfia shoshoniensis Matthew and Granger 1915 eutherian
 Hyaenodonta -
Didelphodus absarokae Cope 1881 eutherian