Reservoir Creek Bonanza (Eocene of the United States)

Also known as USGS Loc. D-1198, 1160, 1160N, 1244, 1315, YPM 45 (= 1198B), 45-S (= 1198C), 45-E

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: T. M. Bown, K. D. Rose, E. L. Simons and S. L. Wing. 1994. Distribution and stratigraphic correlation of upper Paleocene and lower Eocene fossil mammal and plant localities of the Fort Union, Willwood, and Tatman formations, southern Bighorn Basin, Wyoming. United States Geological Survey Professional Paper 1540:1-103 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 15576: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• Schankler-Wing and Bown sections meet at this locality, so it has a meter level in both sections; see Schankler 1980 for placement of YPM 45 at 530 m in his section
USGS 1244 and part of 1198 are in Washakie County
USGS D-1662 is placed at the 470/550 level by B & R 87
Reptilia
 Testudines - Kinosternoidea
Baltemys staurogastros3 Hutchison 1991 mud turtle
from UCMP loc V72013 = Yale 45
Mammalia
 Primates - Microsyopidae
Microsyops latidens Cope 1882 primate
 Primates - Omomyidae
Anemorhysis pattersoni n. sp. Bown and Rose 1984 tarsier
described by Bown and Rose 1984; type is from YPM 45-S; includes specimen of "A. musculus" (Szalay 1976 fig. 39); B & R 87: at YPM 45-S, USGS D-1198C
Absarokius metoecus n. sp. Bown and Rose 1987 tarsier
USGS D-1198 (type is from D-1198-B), 1662, YPM 45-M, -E, -S: B & R 87
 Primates - Notharctidae
Cantius abditus n. sp. Gingerich and Simons 1977 primate
from YPM 45: Gingerich and Simons 1977
 Primates - Paromomyidae
Phenacolemurinae indet.1 Simpson 1955 primate
 Cimolesta - Coryphodontidae
Coryphodon sp. Owen 1845 pantodont
 Leptictida - Leptictidae
Palaeictops bicuspis Cope 1880 eutherian
see also Rose 1999a for material from USGS D-1198 and Y-45S
 Perissodactyla -
cf. Homogalax sp. Hay 1899 odd-toed ungulate
Heptodon calciculus Cope 1880 odd-toed ungulate
 Perissodactyla - Equidae
Xenicohippus grangeri Bown and Kihm 1981 horse
 Perissodactyla - Palaeotheriidae
Hyracotherium sp. Owen 1841 odd-toed ungulate
 Creodonta - Oxyaenidae
Oxyaena cf. forcipata Cope 1874 creodont
 Ferae - Viverravidae
Didymictis protenus4 Cope 1874 placental
Viverravus lutosus Gazin 1952 placental
Viverravus cf. acutus Matthew and Granger 1915 placental
 Ferae -
cf. Oodectes sp. Wortman 1901 placental
Uintacyon cf. asodes Gazin 1952 placental
Vassacyon promicrodon Wortman and Matthew 1899 placental
 Carnivora - Miacidae
Miacis petilus2 Gingerich 1983 carnivoran
probably includes "M. exiguus" based on discussion of Gingerich 1983
 Carnivora -
Vulpavus australis Matthew and Granger 1915 carnivoran
Vulpavus canavus Cope 1881 carnivoran
 Ferae - Metacheiromyidae
Palaeanodon ignavus Matthew 1918 placental
 Macroscelidea - Amphilemuridae
Macrocranion nitens Matthew 1918 elephant shrew
 Taeniodonta - Stylinodontidae
Ectoganus cf. gliriformis Cope 1874 taeniodont
 Trogontia - Esthonychidae
Esthonyx sp. Cope 1874 tillodont
presumably sensu stricto
 Tribosphenida - Arctocyonidae
Anacodon ursidens Cope 1882 condylarth
Thryptacodon cf. antiquus1 Matthew and Granger 1915 condylarth
Chriacus sp. Cope 1883 condylarth
said to be new
 Ungulata - Hyopsodontidae
Hyopsodus sp.1 Leidy 1870 condylarth
Hyopsodus cf. minor Loomis 1905 condylarth
 Ungulata - Diacodexeidae
Bunophorus grangeri5 Sinclair 1914 even-toed ungulate
Y-M45; presumably = "B. sp."
Bunophorus robustus1 Sinclair 1914 even-toed ungulate
Diacodexis metsiacus Cope 1882 even-toed ungulate
 Ungulata - Phenacodontidae
Phenacodus vortmani Cope 1880 condylarth
 Insectivora - Apatemyidae
Apatemys rodens Troxell 1923 insectivoran
Apatemys bellulus Marsh 1872 insectivoran
 Hyaenodonta -
Prolimnocyon sp. Matthew and Granger 1915 eutherian
 Hyaenodonta - Hyaenodontidae
Tritemnodon cf. strenuus1 Cope 1875 eutherian
Gazinocyon vulpeculus1 Matthew and Granger 1915 eutherian
 Hyaenodonta -
Didelphodus sp. Cope 1882 eutherian