Elk Creek (420 m) (Eocene of the United States)

Also known as YPM 67 (= UCMP V81043), 68, 84, 127, 219, 265, 269

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

Reposited in the UCMP

Primary reference: D. M. Schankler. 1980. University of Michigan Papers on Paleontology 24 [J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 15538: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Kinosternoidea
Baltemys staurogastros4 Hutchison 1991 mud turtle
 Testudines - Pantrionychidae
Plastomenus sp.3 Cope 1873 turtle
 Testudines -
Planetochelys dithyros5 Hutchison 2013 turtle
UCMP loc V80010 (=Yale 84)
Mammalia
 Primates - Notharctidae
Cantius sp.1 Simons 1962 primate
 Primates - Paromomyidae
Phenacolemurinae indet. Simpson 1955 primate
"Phenacolemur sp. 2"
 Cimolesta - Coryphodontidae
Coryphodon sp. Owen 1845 pantodont
"2"
Coryphodon sp. Owen 1845 pantodont
"3"
 Cimolesta - Pantolestidae
Palaeosinopa veterrima Matthew 1901 eutherian
 Rodentia - Ischyromyidae
Paramys cf. excavatus Loomis 1907 rodent
Paramys cf. copei Loomis 1907 rodent
 Perissodactyla - Equidae
"Hyracotherium grangeri" = Sifrhippus grangeri, "Hyracotherium aemulor" = Arenahippus aemulor
"Hyracotherium grangeri" = Sifrhippus grangeri Gingerich 1989 horse
"H. sp. 1"
"Hyracotherium aemulor" = Arenahippus aemulor Gingerich 1991 horse
"H. sp. 2"
 Ferae - Viverravidae
Didymictis sp. Cope 1875 placental
"curtidens/lysitensis"
Viverravus sp. Marsh 1872 placental
"V. acutus/gracilis"
 Ferae -
Uintacyon asodes Gazin 1952 placental
 Carnivora -
Vulpavus australis Matthew and Granger 1915 carnivoran
 Trogontia - Esthonychidae
Esthonyx bisulcatus Cope 1874 tillodont
 Ungulata - Hyopsodontidae
Hyopsodus sp. Leidy 1870 condylarth
"1"
Hyopsodus sp. Leidy 1870 condylarth
"latidens/miticulus"
Hyopsodus pauxillus n. sp.2 Gingerich 1994 condylarth
from YPM 219, and said to be at the 397 m level; "H. loomisi/minor"
 Ungulata - Diacodexeidae
Diacodexis sp.1 Cope 1882 even-toed ungulate
 Ungulata - Phenacodontidae
Copecion brachypternus1 Cope 1882 condylarth
Phenacodus sp.1 Cope 1873 condylarth
Phenacodus vortmani Cope 1880 condylarth
 Hyaenodonta - Hyaenodontidae
Prototomus sp. Cope 1874 eutherian
"1"
Tritemnodon strenuus1 Cope 1875 eutherian