PBDB Collection

Big Multi Locality (Paleogene of the United States)

Also known as Big Multi Quarry; CM 2433; UCMP V-76134; ETE Locality 1563

Where: Sweetwater County, Wyoming (41.9° N, 108.6° W: paleocoordinates 47.2° N, 90.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• "75-100 m below the base of the Wasatch Fm."

• group of beds-level stratigraphic resolution

Environment/lithology: "floodplain"; lithified, gray mudstone

• ETE sed env 1: fluvial, ETE sed env 2: overbank ETE event: ., ETE env comment: 0

• ETE rock type adj: "prple,gry,blcky"

Size class: macrofossils

Collection methods: quarrying, surface (float)

• ETE reference list: 980, 979, 978

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 15072: authorized by John Alroy, entered by John Alroy on 30.04.1994, edited by K. Christopher Beard, Patricia Holroyd and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

• work of Krause 1980 appears to postdate that of Rose

Show authors, comments, and common names

Mammalia
Theriamorpha - Peradectidae	Peradectes protinnominatus⁸ Peradectes protinnominatus⁸ McKenna 1960 marsupial
Macroscelidea - Apheliscidae	cf. Apheliscus nitidus, Aletodon cf. conardae⁸ cf. Apheliscus nitidus Simpson 1937 elephant shrew Aletodon cf. conardae⁸ Winterfeld 1982 elephant shrew
Macroscelidea -	"Diacocherus minutus" = Adunator minutus⁸ "Diacocherus minutus" = Adunator minutus⁸ Jepsen 1930 elephant shrew
Theriamorpha - Viverravidae	Viverravus sp.⁸, Didymictis sp. Viverravus sp.⁸ Marsh 1872 placental Didymictis sp. Cope 1875 placental
Theriamorpha - Metacheiromyidae	Palaeanodon cf. parvulus⁸ Palaeanodon cf. parvulus⁸ Matthew 1918 placental
Procreodi - Arctocyonidae	Chriacus sp.⁸ Chriacus sp.⁸ Cope 1883 condylarth
Theriamorpha - Phenacodontidae	Ectocion osbornianus, Phenacodus intermedius⁸ Ectocion osbornianus Cope 1882 condylarth Phenacodus intermedius⁸ Granger 1915 condylarth presumably includes "P. primaevus" and "P. vortmani"
Placentalia -	"Lipotyphla indet." = Eulipotyphla⁸ "Lipotyphla indet." = Eulipotyphla⁸ placental said to be new and compared to Mckennatherium; conceivably the same as "cf. Cedrocherus sp." of Dawson and Beard 1996, said to be new
Theriamorpha - Pantolestoidae	Palaeosinopa sp.⁸ Palaeosinopa sp.⁸ Matthew 1901 placental
Theriamorpha - Erinaceoidae	cf. Leipsanolestes sp. cf. Leipsanolestes sp. Simpson 1928 placental said to be new by Wilf et al. 1998
Theriamorpha - Nyctitheriidae	Nyctitheriidae indet.⁶, Limaconyssus habrus⁶, Plagioctenodon cf. rosei⁶, Plagioctenodon dawsonae n. sp.⁶, Plagioctenodon goliath n. sp.⁶, Wyonycteris chalix⁶, cf. Wyonycteris galensis⁶, Plagioctenoides cryptos n. sp.⁶, Ceutholestes acerbus n. sp.⁶ Nyctitheriidae indet.⁶ Simpson 1928 placental CM 73645 Limaconyssus habrus⁶ Gingerich 1987 placental CM 70110 and more Plagioctenodon cf. rosei⁶ Gingerich 1987 placental CM 70712, 70725 Plagioctenodon dawsonae n. sp.⁶ Jones and Beard 2023 placental CM 70754 - type Plagioctenodon goliath n. sp.⁶ Jones and Beard 2023 placental CM 71621 - type Wyonycteris chalix⁶ Gingerich 1987 placental CM 68154 and more cf. Wyonycteris galensis⁶ Secord 2008 placental CM 72040 and more Plagioctenoides cryptos n. sp.⁶ Jones and Beard 2023 placental CM 70158 - type Ceutholestes acerbus n. sp.⁶ Jones and Beard 2023 placental CM 72782 - type
Rodentia - Alagomyidae	Alagomys russelli n. sp.⁴ Alagomys russelli n. sp.⁴ Dawson and Beard 1996 rodent
Rodentia - Ischyromyidae	Paramys adamus n. sp.⁴ Paramys adamus n. sp.⁴ Dawson and Beard 1996 rodent
Primates - Paromomyidae	cf. Ignacius sp.⁸, Phenacolemur cf. simonsi, Dillerlemur cf. pagei¹ cf. Ignacius sp.⁸ Matthew and Granger 1921 primate Phenacolemur cf. simonsi Bown and Rose 1976 primate Dillerlemur cf. pagei¹ Jepsen 1930 primate
Primates - Plesiadapidae	Chiromyoides gingerichi², Plesiadapis dubius, Plesiadapis cookei³ Chiromyoides gingerichi² Secord 2008 primate Plesiadapis dubius Matthew 1915 primate apparently includes "P. cookei" based on Wilf et al. 1998; however, Dawson and Beard 1996 suggest that the latter is P. gingerichi Plesiadapis cookei³ Jepsen 1930 primate
Primates - Carpolestidae	Carpolestes nigridens Carpolestes nigridens Simpson 1928 primate
Primates - Microsyopidae	Arctodontomys sp., Arctodontomys simplicidens⁸ Arctodontomys sp. Gunnell 1985 primate said to be new: Wilf et al. 1998; may include "Navajovius sp." of Gunnell 1989 = "microsyopid near Navajovius" and/or "Niptomomys sp." Arctodontomys simplicidens⁸ Rose 1981 primate
Primates - Micromomyidae	Dryomomys dulcifer n. sp.³, Tinimomys tribos n. sp.³ Dryomomys dulcifer n. sp.³ Chester and Beard 2012 primate Tinimomys tribos n. sp.³ Chester and Beard 2012 primate
Dermoptera -	Planetetherium sp.⁴ Planetetherium sp.⁴ Simpson 1928 colugo
Cimolesta -	"Esthonyx xenicus" = Azygonyx xenicus⁴ "Esthonyx xenicus" = Azygonyx xenicus⁴ Gingerich and Gunnell 1979 tillodont
Cimolesta - Apatemyidae	Labidolemur kayi⁸ Labidolemur kayi⁸ Simpson 1929 eutherian
Cimolesta - Cyriacotheriidae	Cyriacotherium psamminum⁸ Cyriacotherium psamminum⁸ Rose and Krause 1982 pantodont
Proteutheria - Palaeoryctidae	Palaeoryctes cf. punctatus⁸ Palaeoryctes cf. punctatus⁸ Van Valen 1966 eutherian
Dinocerata - Prodinoceratidae	Probathyopsis cf. harrisorum⁸ Probathyopsis cf. harrisorum⁸ Patterson 1939 uintathere
Multituberculata - Microcosmodontidae	Microcosmodon conus³ Microcosmodon conus³ Jepsen 1930 multituberculate could be M. conus or M. rosei according to Krause 1980, but OK according to Wilf et al. 1998
Multituberculata - Neoplagiaulacidae	"Parectypodus laytoni" = Ectypodus laytoni⁸, Ectypodus cf. powelli⁷ "Parectypodus laytoni" = Ectypodus laytoni⁸ Jepsen 1940 multituberculate Ectypodus cf. powelli⁷ Jepsen 1940 multituberculate
Multituberculata -	Neoliotomus conventus⁸ Neoliotomus conventus⁸ Jepsen 1930 multituberculate according to Krause 1980, "only specimen of ? Neoliotomus sp., the 'Big Multi,' has been lost"
Amphibia
Caudata - Urodela	Urodela indet.⁵ Urodela indet.⁵ salamander

¹Alroy 2002; ²Beard et al. 2020; ³Chester and Beard 2012; ⁴Dawson and Beard 1996; ⁵Gardner and DeMar 2013; ⁶Jones and Beard 2023; ⁷Krause 1980; ⁸Wilf et al. 1998