SC-164 (Paleogene of the United States)

Where: Park County, Wyoming (44.3° N, 109.0° W: paleocoordinates 49.6° N, 90.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

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

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Reposited in the UMMP

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: taxonomic analysis

PaleoDB collection 15174: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Will Clyde

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Cimolesta - Coryphodontidae
Coryphodon sp. Owen 1845 pantodont
 Cimolesta -
"Esthonyx ancylion" = Azygonyx ancylion
"Esthonyx ancylion" = Azygonyx ancylion Gingerich and Gunnell 1979 tillodont
 Ferae - Viverravidae
Didymictis proteus2 Polly 1997 placental
 Tribosphenida - Phenacodontidae
Ectocion osbornianus Cope 1882 condylarth
Phenacodus intermedius3 Granger 1915 condylarth
 Macroscelidea - Apheliscidae
Haplomylus simpsoni Rose 1981 elephant shrew
 Dinocerata - Prodinoceratidae
Probathyopsis praecursor Simpson 1929 uintathere
Reptilia
 Squamata - Anguidae
Melanosaurus maximus1 Gilmore 1928 squamates
 Loricata -
"Leidyosuchus formidabilis" = Borealosuchus formidabilis1
"Leidyosuchus formidabilis" = Borealosuchus formidabilis1 Erickson 1976 crocodilian