PBDB Collection

Elk Creek (570 m) (Eocene of the United States)

Also known as YPM 18a, 26a-d, 27, Pelycodus Loc., 28, 56, 59, 66, 70, 71b, 74, 317, USGS D-1469 (565 m), 1163, 1338, 1345

Where: Big Horn County, Wyoming (44.5° N, 108.0° W: paleocoordinates 49.2° N, 90.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Primary reference: D. M. Schankler. 1980. Faunal Zonation of the Willwood Formation in the Central Bighorn Basin, Wyoming. University of Michigan Papers on Paleontology 24:99-114 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 15553: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• USGS 1346 is listed twice, here with an asterisk and at 580 without
USGS D-1163 is from Washakie County

Show authors, comments, and common names

Mammalia
Theriamorpha - Leptictidae	Didelphodus absarokae, Palaeictops bicuspis Didelphodus absarokae Cope 1881 eutherian Palaeictops bicuspis Cope 1880 eutherian
Cimolesta - Coryphodontidae	Coryphodon sp., Coryphodon sp. Coryphodon sp. Owen 1845 pantodont "2" Coryphodon sp. Owen 1845 pantodont "3"
Cimolesta - Esthonychidae	Esthonyx bisulcatus Esthonyx bisulcatus Cope 1874 tillodont
Condylarthra - Hyopsodontidae	Hyopsodus sp., Hyopsodus sp. Hyopsodus sp. Leidy 1870 condylarth "latidens/miticulus" Hyopsodus sp. Leidy 1870 condylarth "loomisi/minor"
Macroscelidea - Apheliscidae	Apheliscus sp. Apheliscus sp. Cope 1875 elephant shrew "1"
Acreodi - Hapalodectidae	Hapalodectes leptognathus Hapalodectes leptognathus Osborn and Wortman 1892 condylarth
Theriamorpha - Phenacodontidae	Phenacodus vortmani Phenacodus vortmani Cope 1880 condylarth
Perissodactyla - Equidae	"Hyracotherium aemulor" = Arenahippus aemulor, "Hyracotherium grangeri" = Sifrhippus grangeri, "Hyracotherium cf. index" = Minippus index "Hyracotherium aemulor" = Arenahippus aemulor Gingerich 1991 horse "H. sp. 2" "Hyracotherium grangeri" = Sifrhippus grangeri Gingerich 1989 horse "H. sp. 1" "Hyracotherium cf. index" = Minippus index Cope 1873 horse
Perissodactyla -	Heptodon calciculus Heptodon calciculus Cope 1880 odd-toed ungulate
Procreodi - Arctocyonidae	Anacodon ursidens, Chriacus gallinae Anacodon ursidens Cope 1882 condylarth Chriacus gallinae Matthew and Granger 1915 condylarth
Artiodactyla - Diacodexeidae	Bunophorus sp.¹, Diacodexis sp.¹ Bunophorus sp.¹ Sinclair 1914 even-toed ungulate Diacodexis sp.¹ Cope 1882 even-toed ungulate
Theriamorpha - Viverravidae	Viverravus sp., Didymictis sp. Viverravus sp. Marsh 1872 placental "V. acutus/gracilis" Didymictis sp. Cope 1875 placental "curtidens/lysitensis"
Theriamorpha -	Vulpavus canavus, Vulpavus australis, Uintacyon asodes, Miacis sp.¹ Vulpavus canavus Cope 1881 placental Vulpavus australis Matthew and Granger 1915 placental Uintacyon asodes Gazin 1952 placental Miacis sp.¹ Cope 1872 placental
Creodonta - Oxyaenidae	Oxyaena sp. Oxyaena sp. Cope 1874 creodont "intermedia/forcipata"
Creodonta - Hyaenodontidae	Prototomus sp. Prototomus sp. Cope 1874 creodont "1"
Rodentia - Sciuravidae	cf. Knightomys minor¹ cf. Knightomys minor¹ Wood 1965 rodent
Rodentia - Ischyromyidae	Paramys cf. excavatus, Paramys cf. copei, cf. Mytonomys coloradensis¹ Paramys cf. excavatus Loomis 1907 rodent Paramys cf. copei Loomis 1907 rodent cf. Mytonomys coloradensis¹ Wood 1962 rodent
Primates - Paromomyidae	Phenacolemurinae indet. Phenacolemurinae indet. Simpson 1955 primate "Phenacolemur sp. 2"
Primates - Omomyidae	Absarokius abbotti², Absarokius metoecus², Tetonius sp.¹ Absarokius abbotti² Loomis 1906 tarsier Y-28, USGS D-1163, 1338, 1345, 1469 Absarokius metoecus² Bown and Rose 1987 tarsier Y-27, 28, 56, USGS D-1469 Tetonius sp.¹ Matthew 1915 tarsier
Primates - Notharctidae	Cantius sp., Cantius abditus¹ Cantius sp. Simons 1962 primate "Pelycodus" frugivorus and "Copelemur consortutus"; not clear if this represents Cantius frugivorus or C. nunienus, which are said to be a single lineage by Godinot 1998 Cantius abditus¹ Gingerich and Simons 1977 primate
Primates - Microsyopidae	Microsyopidae indet.¹ Microsyopidae indet.¹ Osborn and Wortman 1892 primate
Reptilia
Testudines -	Planetochelys dithyros⁴ Planetochelys dithyros⁴ Hutchison 2013 turtle at UCMP loc V80007 (=Yale 27)
Testudines - Kinosternoidea	Baltemys staurogastros³ Baltemys staurogastros³ Hutchison 1991 mud turtle

¹Alroy 2002; ²Bown and Rose 1987; ³Hutchison 1991; ⁴Hutchison 2013