Bug Creek West (Paleocene of the United States)

Where: McCone County, Montana (47.8° N, 106.1° W: paleocoordinates 54.0° N, 80.8° W)

• coordinate based on political unit

When: Hell Creek Formation, Puercan (66.0 - 63.3 Ma)

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Primary reference: R. E. Sloan. 1976. The ecology of dinosaur extinction. In C. S. Churcher (ed.), Athlon: Essays on Palaeontology in Honor of Loris Shano Russell. Royal Ontario Museum, Life Sciences Miscellaneous Publications 134-154 [M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 14672: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• "60 feet below the Tullock Formation in the northeast quarter of sect. 17, T 22 N, R 43 E"
Lofgren 1995 argues that direct superposition of this locality and Bug Creek Anthills is not demonstrable
based on Lofgren et al. 1990 and Lofgren 1995, fauna is mixed; I have sorted out Paleocene and reworked Cretaceous lists based on Lofgren's scheme
Mammalia
 Multituberculata - Eucosmodontidae
Stygimys kuszmauli1 Sloan and Van Valen 1965 multituberculate
 Multituberculata - Neoplagiaulacidae
cf. Mesodma sp.1 Jepsen 1940 multituberculate
must include "M. formosa" and "M. thompsoni" of Sloan and Van Valen 1965
 Multituberculata -
Cimexomys minor1 Sloan and Van Valen 1965 multituberculate
 Multituberculata - Taeniolabididae
"Catopsalis joyneri" = Valenopsalis joyneri1
"Catopsalis joyneri" = Valenopsalis joyneri1 Sloan and Van Valen 1965 multituberculate
 Cimolesta - Cimolestidae
Procerberus formicarum1 Sloan and Van Valen 1965 eutherian
 Procreodi - Arctocyonidae
Baioconodon sp.2 Gazin 1941 condylarth
Mimatuta morgoth3 Van Valen 1978 condylarth
Protungulatum sp.1 Sloan and Van Valen 1965 condylarth
called "sp. O" by Sloan/Van Valen, "sp. M" by Archibald and Clemens; "M" could be M. morgoth
Protungulatum donnae1 Sloan and Van Valen 1965 condylarth
Protungulatum gorgun3 Van Valen 1978 condylarth