PBDB Collection

SC-136 (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 15159: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Will Clyde and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• supersedes list given by Gingerich 1977
meter level said to be 1200 m by Gunnell and Gingerich 1991 and appears to be 1180 m in fig. 3

Show authors, comments, and common names

Reptilia
Loricata -	"Leidyosuchus formidabilis" = Borealosuchus formidabilis² "Leidyosuchus formidabilis" = Borealosuchus formidabilis² Erickson 1976 crocodilian
Squamata - Anguidae	Xestops vagans² Xestops vagans² Marsh 1872 squamates
Testudines - Emydidae	Emydidae "indet. B"², Emydidae "indet. A"² Emydidae "indet. B"² Rafinesque 1815 turtle Emydidae "indet. A"² Rafinesque 1815 turtle
Testudines - Pantrionychidae	Plastomenus sp.² Plastomenus sp.² Cope 1873 turtle
Mammalia
Macroscelidea - Apheliscidae	Apheliscus nitidus, Aletodon gunnelli, Haplomylus simpsoni Apheliscus nitidus Simpson 1937 elephant shrew Aletodon gunnelli Gingerich 1977 elephant shrew Haplomylus simpsoni Rose 1981 elephant shrew
Theriamorpha - Phenacodontidae	Phenacodus intermedius⁸, Ectocion osbornianus Phenacodus intermedius⁸ Granger 1915 condylarth Ectocion osbornianus Cope 1882 condylarth
Procreodi - Arctocyonidae	Princetonia yalensis³, ? Chriacus sp. Princetonia yalensis³ Gingerich 1989 condylarth ? Chriacus sp. Cope 1883 condylarth
Creodonta - Oxyaenidae	Dipsalidictis krausei⁴, Dipsalidictis aequidens⁴ Dipsalidictis krausei⁴ Gunnell and Gingerich 1991 creodont Dipsalidictis aequidens⁴ Matthew and Granger 1915 creodont
Theriamorpha - Viverravidae	Didymictis proteus⁶ Didymictis proteus⁶ Polly 1997 placental
Acreodi - Mesonychidae	Dissacus praenuntius⁵ Dissacus praenuntius⁵ Matthew and Granger 1915 condylarth YPM-PU specimen from same quarter of same section as SC-136, and Rose 1981a mentions a PU specimen from the vicinity of this locality DUPLICATE REF 2677 or 2678
Theriamorpha - Pantolestoidae	Palaeosinopa sp. Palaeosinopa sp. Matthew 1901 placental
Primates - Plesiadapidae	Chiromyoides gingerichi⁷, Plesiadapis cookei Chiromyoides gingerichi⁷ Secord 2008 primate Plesiadapis cookei Jepsen 1930 primate probably the type, see Gingerich 1980b
Primates - Paromomyidae	Dillerlemur pagei¹ Dillerlemur pagei¹ Jepsen 1930 primate
Theriamorpha - Leptictidae	cf. Prodiacodon tauricinerei cf. Prodiacodon tauricinerei Jepsen 1930 eutherian
Proteutheria - Palaeoryctidae	Palaeoryctes punctatus Palaeoryctes punctatus Van Valen 1966 eutherian
Cimolesta - Coryphodontidae	Coryphodon sp. Coryphodon sp. Owen 1845 pantodont
Cimolesta -	"Esthonyx ancylion" = Azygonyx ancylion "Esthonyx ancylion" = Azygonyx ancylion Gingerich and Gunnell 1979 tillodont
Theriamorpha - Stylinodontidae	Ectoganus sp.¹ Ectoganus sp.¹ Cope 1874 taeniodont

¹Alroy 2002; ²Bartels 1983; ³Gingerich 1989; ⁴Gunnell and Gingerich 1991; ⁵O'Leary and Rose 1995; ⁶Polly 1997; ⁷Secord 2008; ⁸Thewissen 1990