New Fork (Eocene of the United States)

Also known as Alkali Creek

Where: Sublette County, Wyoming (42.7° N, 110.1° W: paleocoordinates 47.7° N, 93.5° W)

• coordinate based on political unit

When: Cathedral Bluffs Tongue Member (Wasatch Formation), Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Primary reference: C. L. Gazin. 1962. A Further Study Of The Lower Eocene Mammalian Faunas Of Southwestern Wyoming. Smithsonian Miscellaneous Collections 144(1):1-98 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 15710: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• called "New Fork or Cathedral Bluff's exposures" by Gazin 1965b, and probably includes localities in the Alkali Creek Tongue and Farson Sandstone according to Holroyd pers. commun. 31 May 2001
this collection is NOT from West's New Fork-Big Sandy field area
Lostcabinian
Mammalia
 Primates - Microsyopidae
Microsyops cf. scottianus3 Cope 1881 primate
 Primates - Notharctidae
Notharctus cf. venticolus Osborn 1902 primate
Cantius cf. nunienus1 Cope 1881 primate
 Cimolesta - Pantolestidae
Palaeosinopa cf. didelphoides Cope 1881 eutherian
 Rodentia - Sciuravidae
Sciuravus wilsoni Gazin 1961 rodent
 Rodentia - Ischyromyidae
Paramys copei2 Loomis 1907 rodent
 Placentalia -
Perissodactyla indet.1 Owen 1848 odd-toed ungulate
 Perissodactyla - Brontotheriidae
Lambdotherium popoagicum Cope 1880 brontothere
 Perissodactyla - Hyrachyidae
Hyrachyus cf. modestus Leidy 1870 odd-toed ungulate
 Perissodactyla -
Heptodon calciculus1 Cope 1880 odd-toed ungulate
 Perissodactyla - Palaeotheriidae
Hyracotherium vasacciense Cope 1872 odd-toed ungulate
 Ferae - Viverravidae
Didymictis altidens Cope 1880 placental
Viverravus cf. gracilis1 Marsh 1872 placental
Viverravus lutosus Gazin 1952 placental
 Ferae -
Uintacyon asodes Gazin 1952 placental
 Carnivora - Miacidae
Miacis sp.1 Cope 1872 carnivoran
 Carnivora -
Vulpavus canavus4 Cope 1881 carnivoran
 Trogontia - Esthonychidae
Esthonyx acutidens Cope 1881 tillodont
 Ungulata - Hyopsodontidae
Hyopsodus cf. mentalis Cope 1875 condylarth
Hyopsodus cf. walcottianus Matthew 1915 condylarth
Hyopsodus wortmani Osborn 1902 condylarth
 Ungulata - Uintatheriidae
cf. Bathyopsis fissidens Cope 1881 uintathere
 Ungulata - Homacodontidae
Hexacodus pelodes Gazin 1952 even-toed ungulate
 Ungulata - Diacodexeidae
Bunophorus cf. etsagicus Cope 1882 even-toed ungulate
Diacodexis sp.1 Cope 1882 even-toed ungulate
 Ungulata - Phenacodontidae
Meniscotherium cf. chamense Cope 1874 condylarth
 Acreodi - Hapalodectidae
Hapalodectes leptognathus1 Osborn and Wortman 1892 condylarth
 Acreodi - Mesonychidae
? Pachyaena sp. Cope 1874 condylarth
 Hyaenodonta -
Prolimnocyon cf. antiquus Matthew and Granger 1915 eutherian
 Hyaenodonta - Hyaenodontidae
Gazinocyon cf. vulpeculus1 Matthew and Granger 1915 eutherian