PBDB Collection

Divide Quarry (Paleocene of the United States)

Also known as FG-46

Where: Big Horn County, Wyoming (44.7° N, 108.3° W: paleocoordinates 50.1° N, 88.9° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Fort Union Formation, Late/Upper Paleocene (58.7 - 55.8 Ma)

Environment/lithology: fluvial-lacustrine; lithified, lenticular siliciclastic sediments

Size classes: macrofossils, mesofossils

Reposited in the UMMP

Collection methods: bulk, quarrying, surface (float), surface (in situ)

Primary reference: D. W. Krause. 1987. Systematic Revision of the Genus Prochetodon (Ptilodontidae, Multituberculata) from the Late Paleocene and Early Eocene of Western North America. Contributions from the Museum of Paleontology, University of Michigan 27(8):221-236 [J. Alroy/J. Alroy/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 15024: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by K. Christopher Beard and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• same level as Croc Tooth and "clearly overlying" Cedar Point and Jepsen Quarries: Gingerich 1976NE 1/4 SW 1/4 sec 16 T54N R95W; Biozone Ti-4

Show authors, comments, and common names

Reptilia
Squamata - Anguidae	cf. Machaerosaurus sp.² cf. Machaerosaurus sp.² Gilmore 1928 squamates
Mammalia
Multituberculata - Microcosmodontidae	Microcosmodon sp.⁶ Microcosmodon sp.⁶ Jepsen 1930 multituberculate Based on UM 77301, LI/1
Multituberculata - Ptilodontidae	Prochetodon foxi, Ptilodus kummae⁵ Prochetodon foxi Krause 1987 multituberculate Ptilodus kummae⁵ Krause 1977 multituberculate
Multituberculata - Neoplagiaulacidae	? Mimetodon silberlingi⁶, Neoplagiaulax mckennai⁶, Neoplagiaulax cf. hazeni⁶ ? Mimetodon silberlingi⁶ Simpson 1935 multituberculate Based on UM 82102, RP/4 fragment Neoplagiaulax mckennai⁶ Sloan 1987 multituberculate Based on UM 85306, LP4/; UM 110242, RP4/ Neoplagiaulax cf. hazeni⁶ Jepsen 1940 multituberculate
Macroscelidea -	cf. Adunator sp.⁶, Adunator minutus⁶ cf. Adunator sp.⁶ Russell 1964 elephant shrew Based on UM 92254 Adunator minutus⁶ Jepsen 1930 elephant shrew
Condylarthra - Hyopsodontidae	Hyopsodontidae indet.⁶ Hyopsodontidae indet.⁶ Trouessart 1879 condylarth
Theriamorpha - Phenacodontidae	Phenacodus magnus⁶, Ectocion cedrus⁷ Phenacodus magnus⁶ Thewissen 1990 condylarth Ectocion cedrus⁷ Thewissen 1990 condylarth
Procreodi - Arctocyonidae	Thryptacodon australis⁶, Lambertocyon gingerichi⁶, Arctocyon sp.⁶, "Arctocyon mumak" = Arctocyon acrogenius⁶ Thryptacodon australis⁶ Simpson 1935 condylarth Lambertocyon gingerichi⁶ Gunnell 1994 condylarth Arctocyon sp.⁶ Blainville 1841 condylarth "Arctocyon small sp." "Arctocyon mumak" = Arctocyon acrogenius⁶ Gazin 1956 condylarth
Theriamorpha - Viverravidae	Didymictis cf. dellensis⁶, cf. Raphictis sp.⁶, Viverravus cf. schaffi⁶ Didymictis cf. dellensis⁶ Dorr 1952 placental cf. Raphictis sp.⁶ Gingerich and Winkler 1985 placental cited as Raphictis? Viverravus cf. schaffi⁶ Gingerich and Winkler 1985 placental
Acreodi - Mesonychidae	Dissacus cf. navajovius⁶ Dissacus cf. navajovius⁶ Cope 1881 condylarth
Theriamorpha - Nyctitheriidae	cf. Leptacodon choristus n. sp.⁶ cf. Leptacodon choristus n. sp.⁶ Secord 2008 placental
Theriamorpha - Erinaceidae	Litolestes cf. ignotus⁶ Litolestes cf. ignotus⁶ Jepsen 1930 hedgehog Based on UM 85410
Theriamorpha - Pantolestoidae	Palaeosinopa cf. dorri⁶, Bessoecetor pilodontus n. sp.⁶, Leptonysson orthius⁶ Palaeosinopa cf. dorri⁶ Gingerich 1980 placental cited as Palaeosinopa dorri? Bessoecetor pilodontus n. sp.⁶ Secord 2008 placental Leptonysson orthius⁶ Secord 2008 placental Based on UM 91330, RM2/; UM 109858, L M/1 trigonid
Primates - Carpolestidae	"Carpomegodon jepseni" = Carpodaptes jepseni¹, Carpodaptes stonleyi³ "Carpomegodon jepseni" = Carpodaptes jepseni¹ Rose 1975 primate Carpodaptes stonleyi³ Fox 2002 primate
Primates - Plesiadapidae	Plesiadapis churchilli⁴ Plesiadapis churchilli⁴ Gingerich 1975 primate
Primates - Paromomyidae	Ignacius frugivorus⁶ Ignacius frugivorus⁶ Matthew and Granger 1921 primate
Theriamorpha - Leptictidae	cf. Prodiacodon sp.⁶ cf. Prodiacodon sp.⁶ Matthew 1929 eutherian
Proteutheria - Palaeoryctidae	Aaptoryctes cf. ivyi⁶, Palaeoryctes jepseni⁶ Aaptoryctes cf. ivyi⁶ Gingerich 1982 eutherian Palaeoryctes jepseni⁶ Bloch et al. 2004 eutherian
Cimolesta - Cimolestidae	Paleotomus radagasti⁶ Paleotomus radagasti⁶ Van Valen 1978 eutherian
Cimolesta - Cyriacotheriidae	Cyriacotherium cf. argyreum⁶ Cyriacotherium cf. argyreum⁶ Rose and Krause 1982 pantodont
Cimolesta - Titanoideidae	Titanoides gidleyi⁶ Titanoides gidleyi⁶ Jepsen 1930 pantodont
Cimolesta - Barylambdidae	Leptolambda churchilli⁶, Haplolambda cf. quinni⁶ Leptolambda churchilli⁶ Gingerich and Childress 1983 pantodont Based on UM 85308, LM/3; UM 86240, LM/1 Haplolambda cf. quinni⁶ Patterson 1939 pantodont
Cimolesta - Apatemyidae	Labidolemur soricoides⁶, Unuchinia sp.⁶ Labidolemur soricoides⁶ Matthew and Granger 1921 eutherian Unuchinia sp.⁶ Simpson 1937 eutherian

¹Alroy 2002; ²Bartels 1980; ³Fox 2002; ⁴Gingerich 1976; ⁵Gunnell 1994; ⁶Secord 2008; ⁷Thewissen 1990