PBDB Collection

Cedar Point Quarry (Paleocene of the United States)

Where: Big Horn County, Wyoming (44.7° N, 108.4° W: paleocoordinates 50.5° N, 87.9° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Fort Union Formation, Tiffanian (61.7 - 56.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithified siliciclastic sediments

Size classes: macrofossils, mesofossils

Reposited in the UMMP

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

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: paleoecologic analysis

PaleoDB collection 15017: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Philip Mannion, Roger Benson, Patricia Holroyd and K. Christopher Beard

Creative Commons license: CC BY (attribution)

Taxonomic list

• same level as Jepsen Quarry and "clearly" underlying Croc Tooth and Divide Quarries: Gingerich 1976said by Gingerich and Winkler 1985 to be at "approximately 325 m" but I believe this is based on biochronological inference aloneI have used Van Valen's 1978 list of condylarths because Rose gives no reason for ignoring itsec 23-26 T55N R96W"Claenodon ferox" is omitted by Van Valen 1978

•Zone Ti-3

Show authors, comments, and common names

Amphibia
Caudata - Urodela	Lisserpeton bairdi¹¹, Piceoerpeton willwoodense¹¹ Lisserpeton bairdi¹¹ Estes 1965 salamander Piceoerpeton willwoodense¹¹ Meszoely 1967 salamander see also Naylor and Krause 1981; atlantes YPM(PU) 21241A-D and trunk ver tebrae YPM(PU) 20662, 20666, 20788, 20855, and UM 72613
Reptilia
Testudines - Pantrionychidae	"Hutchemys rememdium" = Hutchemys rememdium¹⁰, "Plastomenoides lamberti" = Hutchemys rememdium⁹ "Hutchemys rememdium" = Hutchemys rememdium¹⁰ Joyce et al. 2009 turtle YPM PU 14985 (posterior half of a carapace) "Plastomenoides lamberti" = Hutchemys rememdium⁹ Joyce et al. 2009 turtle UMMP V74588
Testudinata - Baenidae	Cedrobaena putorius n. gen.¹², Palatobaena bairdi n. gen. n. sp.² Cedrobaena putorius n. gen.¹² Gaffney 1972 turtle YPM PU 14984 (holotype skull); YPM PU 14986, posterior portion of parietals; YPM PU 20600, skull; PU 20600, skull Palatobaena bairdi n. gen. n. sp.² Gaffney 1972 turtle PU 16839 - holotype (the right half of a skull, partially distorted)
Squamata - Anguidae	Anguidae indet.⁵, Odaxosaurus sp.³, cf. Odaxosaurus piger⁵ Anguidae indet.⁵ Gray 1825 squamates Odaxosaurus sp.³ Gilmore 1928 squamates cf. Odaxosaurus piger⁵ Gilmore 1928 squamates
Choristodera -	Champsosaurus sp.³ Champsosaurus sp.³ Cope 1876 choristodere
Mammalia
Proteutheria - Palaeoryctidae	cf. Palaeoryctes sp. cf. Palaeoryctes sp. Matthew 1913 eutherian
Macroscelidea -	Litocherus zygeus n. sp.⁶ Litocherus zygeus n. sp.⁶ Gingerich 1983 elephant shrew
Macroscelidea - Apheliscidae	Aletodon quadravus⁶, "cf. Haplaletes serior" = Utemylus serior¹⁷ Aletodon quadravus⁶ Gingerich 1983 elephant shrew "Litomylus? cf. ishami" of Gingerich 1977 "cf. Haplaletes serior" = Utemylus serior¹⁷ Gazin 1956 elephant shrew
Macroscelidea -	"Diacocherus meizon n. sp." = Adunator meizon⁶ "Diacocherus meizon n. sp." = Adunator meizon⁶ Gingerich 1983 elephant shrew
Dermoptera -	Elpidophorus elegans Elpidophorus elegans Simpson 1927 colugo
Primates - Carpolestidae	Carpodaptes hazelae Carpodaptes hazelae Simpson 1936 primate
Primates - Plesiadapidae	Plesiadapis rex Plesiadapis rex Gidley 1923 primate
Primates - Picrodontidae	Picrodus cf. silberlingi Picrodus cf. silberlingi Douglass 1908 primate
Primates - Paromomyidae	Ignacius frugivorus Ignacius frugivorus Matthew and Granger 1921 primate
Acreodi - Mesonychidae	Dissacus cf. praenuntius¹⁷, ? Pachyaena sp.¹⁴ Dissacus cf. praenuntius¹⁷ Matthew and Granger 1915 condylarth ? Pachyaena sp.¹⁴ Cope 1874 condylarth
Procreodi - Arctocyonidae	Thryptacodon australis, Aphanocyon amaurus n. sp.¹⁴, Colpoclaenus keeferi¹⁷, "Mentoclaenodon cf. acrogenius" = Arctocyon acrogenius¹, Chriacus oconostotae¹⁷, Mimotricentes fremontensis¹⁷ Thryptacodon australis Simpson 1935 condylarth Aphanocyon amaurus n. sp.¹⁴ Secord 2008 condylarth Colpoclaenus keeferi¹⁷ Patterson and McGrew 1962 condylarth "Mentoclaenodon cf. acrogenius" = Arctocyon acrogenius¹ Gazin 1956 condylarth Chriacus oconostotae¹⁷ Van Valen 1978 condylarth Mimotricentes fremontensis¹⁷ Gazin 1956 condylarth
Tribosphenida - Phenacodontidae	Ectocion cedrus n. sp.¹⁶, Phenacodus grangeri Ectocion cedrus n. sp.¹⁶ Thewissen 1990 condylarth Phenacodus grangeri Simpson 1935 condylarth
Creodonta - Oxyaenidae	Tytthaena parrisi n. sp. Tytthaena parrisi n. sp. Gingerich 1980 creodont
Ferae - Viverravidae	Raphictis gausion n. sp.⁷, Protictis agastor n. sp.⁷, Protictis paralus⁷ Raphictis gausion n. sp.⁷ Gingerich and Winkler 1985 placental Protictis agastor n. sp.⁷ Gingerich and Winkler 1985 placental Protictis paralus⁷ Holtzman 1978 placental
Soricomorpha - Nyctitheriidae	cf. Leptacodon tener, cf. Leptacodon munusculum, Leptacodon acherontus n. sp.¹⁴ cf. Leptacodon tener Matthew and Granger 1921 placental described by Krishtalka 1976b cf. Leptacodon munusculum Simpson 1935 placental described by Krishtalka 1976b Leptacodon acherontus n. sp.¹⁴ Secord 2008 placental
Tribosphenida - Pantolestoidae	Leptonysson orthius n. sp.¹⁴, Bessoecetor cf. septentrionalis¹³ Leptonysson orthius n. sp.¹⁴ Secord 2008 placental Bessoecetor cf. septentrionalis¹³ Russell 1929 placental
Tribosphenida - Erinaceidae	Cedrocherus ryani n. sp.⁶ Cedrocherus ryani n. sp.⁶ Gingerich 1983 hedgehog
Cimolesta - Pentacodontidae	Bisonalveus holtzmani n. sp.⁶ Bisonalveus holtzmani n. sp.⁶ Gingerich 1983 eutherian
Cimolesta - Cimolestidae	Paleotomus radagasti¹⁷ Paleotomus radagasti¹⁷ Van Valen 1978 eutherian
Cimolesta - Pantolambdidae	Caenolambda jepseni Caenolambda jepseni Simons 1960 pantodont
Cimolesta - Titanoideidae	Titanoides gidleyi Titanoides gidleyi Jepsen 1930 pantodont described by Simons 1960
Cimolesta - Apatemyidae	Labidolemur soricoides Labidolemur soricoides Matthew and Granger 1921 eutherian described by West 1973a
Leptictida - Leptictidae	Myrmecoboides arenarius n. sp.¹⁴ Myrmecoboides arenarius n. sp.¹⁴ Secord 2008 eutherian
Tribosphenida - Peradectidae	Peradectes elegans Peradectes elegans Matthew and Granger 1921 marsupial
Multituberculata - Ptilodontidae	Ptilodus sp.⁴, Ptilodus kummae⁸ Ptilodus sp.⁴ Cope 1881 multituberculate said to be new; listed as "P. sp. C" by Krause 1987a Ptilodus kummae⁸ Krause 1977 multituberculate
Multituberculata - Neoplagiaulacidae	cf. Ectypodus powelli, Neoplagiaulax hunteri, Neoplagiaulax jepi n. sp.¹⁵ cf. Ectypodus powelli Jepsen 1940 multituberculate Neoplagiaulax hunteri Simpson 1936 multituberculate Neoplagiaulax jepi n. sp.¹⁵ Sloan 1987 multituberculate = new sp. of Rose

¹Alroy 2002; ²Archibald and Hutchison 1979; ³Bartels 1980; ⁴Carlson and Krause 1985; ⁵ElShafie 2024; ⁶Gingerich 1983; ⁷Gingerich and Winkler 1985; ⁸Gunnell 1994; ⁹Hutchison 2009; ¹⁰Joyce et al. 2009; ¹¹Krause 1980; ¹²Lyson and Joyce 2009; ¹³Scott et al. 2002; ¹⁴Secord 2008; ¹⁵Sloan 1987; ¹⁶Thewissen 1990; ¹⁷Van Valen 1978