Where: Wyoming (44.6° N, 108.8° W: paleocoordinates 49.4° N, 91.6° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)
• Wa-5
• 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 46767: authorized by Will Clyde, entered by Will Clyde on 24.01.2005, edited by John Alroy
Creative Commons license: CC BY (attribution)
Taxonomic list
Osteichthyes | |
? Acipenseridae indet. Bonaparte 1831 ray-finned fish | |
Actinopteri | |
Lepisosteus sp. Agassiz 1843 gar | |
Reptilia | |
"Crocodilia indet." = Crocodylia
"Crocodilia indet." = Crocodylia Owen 1842 crocodilian | |
Trionychidae indet. Gray 1825 softshell turtle | |
Mammalia | |
Hyopsodus simplex Loomis 1905 condylarth | |
Microsyops angustidens Matthew 1915 primate | |
Cantius abditus Gingerich and Simons 1977 primate | |
Rodentia indet. Bowdich 1821 rodent | |
Palaeosinopa veterrima Matthew 1901 placental | |
Didymictis protenus Cope 1874 placental | |
Vulpavus australis Matthew and Granger 1915 placental
Miacis exiguus Matthew and Granger 1915 placental | |
Diacodexis metsiacus Cope 1882 even-toed ungulate | |
? Thryptacodon antiquus Matthew and Granger 1915 condylarth | |
Phenacodus trilobatus Cope 1881 condylarth
Phenacodus intermedius Granger 1915 condylarth | |
"Hyracotherium pernix" = Arenahippus pernix
"Hyracotherium pernix" = Arenahippus pernix Marsh 1876 horse | |
Homogalax protapirinus, "Hyracotherium cristatum" = Systemodon tapirinus
Homogalax protapirinus Wortman 1896 odd-toed ungulate
"Hyracotherium cristatum" = Systemodon tapirinus Cope 1875 odd-toed ungulate | |
Esthonyx bisulcatus Cope 1874 tillodont | |
Coryphodon sp. Owen 1845 pantodont |