Where: Wheatland County, Montana (46.2° N, 109.9° W: paleocoordinates 53.1° N, 85.7° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Bear Formation, Puercan (66.0 - 63.3 Ma)
• "380 ft (115.8 m) above the top of the underlying Hell Creek Formation and 150 ft (45.7 m) below the contact with the overlying Lebo Formation"; this matches well with the estimate of "500-600 feet" for the Bear given by Simpson 1937a; I therefore have added 530 feet to all of Simpson's levels to extend his section to include the Bear
•said by Buckley 1993 to be somewhere within chron C29n
Environment/lithology: terrestrial
Primary reference: J. H. Hartman, G. A. Buckley, D. W. Krause and T. J. Kroeger. 1989. Paleontology, stratigraphy, and sedimentology of Simpson Quarry (early Paleocene), Crazy Mountains Basin, south-central Montana. Montana Geological Society Field Conference 173-185 [J. Alroy/J. Alroy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 14809: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
Procerberus sp. Sloan and Van Valen 1965 eutherian
Cimolestes sp. Marsh 1889 eutherian
Cimolestes cf. incisus Marsh 1889 eutherian | |
Palaeoryctidae indet. Winge 1917 eutherian | |
Oxyacodon sp. Osborn and Earle 1895 condylarth | |
Oxyclaenus simplex, Protungulatum sp., Loxolophus sp., Loxolophus pentacus1, ? Oxyprimus sp., Baioconodon cf. denverensis, Carcinodon aquilonius
Oxyclaenus simplex Cope 1884 condylarth
Protungulatum sp. Sloan and Van Valen 1965 condylarth
? Oxyprimus sp. Van Valen 1978 condylarth
Baioconodon cf. denverensis Gazin 1941 condylarth
Carcinodon aquilonius Russell 1974 condylarth | |
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Ursolestes perpetior n. gen. n. sp.4 Fox et al. 2015 primate UMMP 100262 - holotype (left M2); referred specimens: UMMP 100253 (right dentary fragment with p4); UMMP 100258 (right dentary fragment with m2; alveoli for c1; p1–4, m1, m3); UMMP 100256 (left m1); UMMP 100260 (right m3); UMMP 100261 (left m3); UMMP 100263 (right M2); UMMP 100264 (right M3); UMMP 100265 (left M3)
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"Mioclaenidae indet." = Hyopsodontidae
"Mioclaenidae indet." = Hyopsodontidae Trouessart 1879 condylarth | |
Litomylus orthronepius Johnston and Fox 1984 elephant shrew | |
Didelphidae indet. opossum | |
Stygimys cf. camptorhiza Johnston and Fox 1984 multituberculate | |
Neoplagiaulax sp., Neoplagiaulax kremnus, Ectypodus sp., Parectypodus sp., Mesodma thompsoni, Mesodma formosa
Neoplagiaulax kremnus Johnston and Fox 1984 multituberculate
Ectypodus sp. Matthew and Granger 1921 multituberculate
Parectypodus sp. Jepsen 1930 multituberculate
Mesodma thompsoni Clemens 1964 multituberculate
Mesodma formosa Marsh 1889 multituberculate | |
? Cimexomys sp. Sloan and Van Valen 1965 multituberculate | |
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