Cleopatra Reservoir (Paleogene of the United States)

Where: Big Horn County, Wyoming (44.5° N, 108.0° W: paleocoordinates 49.7° N, 89.2° W)

• coordinate based on political unit

When: Fort Union Formation, Clarkforkian (56.2 - 54.9 Ma)

• Earlier literature referred to this as the 'Polecat Bench Formation'

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: K. D. Rose. 1981. The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary. University of Michigan Papers on Paleontology 26:1-197 [J. Alroy/J. Alroy/P. Mannion]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 15080: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• not clear whether Rose agrees with i.d. of single incisor as Chiromyoides potior by Gingerich 1976
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Mammalia
 Primates - Plesiadapidae
Plesiadapis cf. dubius, Plesiadapis cookei
Plesiadapis cf. dubius Matthew 1915 primate
Plesiadapis cookei Jepsen 1930 primate
 Primates - Carpolestidae
Carpolestes cf. nigridens
Carpolestes cf. nigridens Simpson 1928 primate
 Tribosphenida - Pantolestoidae
? Palaeosinopa sp.
? Palaeosinopa sp. Matthew 1901 placental
 Ferae - Viverravidae
Didymictis protenus
Didymictis protenus Cope 1874 placental
 Tribosphenida - Phenacodontidae
Phenacodontidae indet., cf. Ectocion osbornianus
Phenacodontidae indet. Cope 1881 condylarth
cf. Ectocion osbornianus Cope 1882 condylarth
 Cimolesta - Coryphodontidae
Coryphodon sp.
Coryphodon sp. Owen 1845 pantodont