MP-24 (Eocene of the United States)

Where: Wyoming (44.6° N, 108.9° W: paleocoordinates 49.5° N, 91.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• Wa-3

• 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 46687: authorized by Will Clyde, entered by Will Clyde on 24.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Amiiformes - Amiidae
Amia sp. Linnaeus 1766 bowfin
Reptilia
 Loricata -
"Crocodilia indet." = Crocodylia
"Crocodilia indet." = Crocodylia Owen 1842 crocodilian
Mammalia
 Cimolesta - Coryphodontidae
Coryphodon eocaenus Owen 1846 pantodont
 Cimolesta - Esthonychidae
Esthonyx bisulcatus Cope 1874 tillodont
 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 -
Rodentia indet. Savage 1951 rodent
 Condylarthra - Hyopsodontidae
Hyopsodus loomisi McKenna 1960 condylarth
 Tribosphenida - Phenacodontidae
Phenacodus intermedius Granger 1915 condylarth
 Perissodactyla -
Homogalax protapirinus Wortman 1896 odd-toed ungulate
Cardiolophus radinskyi Gingerich 1991 odd-toed ungulate
 Perissodactyla - Equidae
"Hyracotherium aemulor" = Arenahippus aemulor
"Hyracotherium aemulor" = Arenahippus aemulor Gingerich 1991 horse
 Ferae - Viverravidae
Viverravus acutus Matthew and Granger 1915 placental
 Hyaenodonta - Hyaenodontidae
Arfia shoshoniensis Matthew and Granger 1915 eutherian