UMMP SC-261 (Paleocene of the United States)

Where: Park County, Wyoming (44.8° N, 108.7° W: paleocoordinates 50.7° N, 88.2° W)

• coordinate stated in text

When: Ti-4a mammal zone, Fort Union Formation, Tiffanian (61.7 - 56.8 Ma)

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Reposited in the UMMP

Primary reference: R. Secord. 2008. The Tiffanian Land-Mammal Age (middle and late Paleocene) in the northern Bighorn Basin, Wyoming. University of Michigan Papers on Paleontology 35:1-192 [K. Beard/K. Beard]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 190436: authorized by Patricia Holroyd, entered by Patricia Holroyd on 07.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Primates - Plesiadapidae
Plesiadapis churchilli Gingerich 1975 primate
 Cimolesta - Titanoideidae
Titanoides gidleyi Jepsen 1930 pantodont
 Ferae - Viverravidae
Didymictis cf. dellensis Dorr 1952 placental
 Tribosphenida - Arctocyonidae
Lambertocyon sp. Gingerich 1979 condylarth
 Ungulata - Phenacodontidae
Ectocion cedrus Thewissen 1990 condylarth
 Multituberculata - Neoplagiaulacidae
Neoplagiaulax cf. hazeni Jepsen 1940 multituberculate
 Multituberculata - Ptilodontidae
Ptilodus kummae Krause 1977 multituberculate