Nipple Hollow (Eocene of the United States)

Also known as FMNH 354-41

Where: Garfield County, Colorado (39.7° N, 107.6° W: paleocoordinates 44.5° N, 91.6° W)

• coordinate based on political unit

• small collection-level geographic resolution

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

• said to be late Wasatchian

Environment/lithology: terrestrial

Reposited in the FMNH

Primary reference: A. J. Kihm. 1984. Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado. [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 15413: authorized by John Alroy, entered by John Alroy on 27.09.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• "exact position unknown" in Four Points Hill section
Mammalia
 Condylarthra - Hyopsodontidae
Hyopsodus lysitensis3 Gingerich 1974 condylarth
 Theriamorpha - Geolabididae
"Didelphodus altidens" = Centetodon altidens
"Didelphodus altidens" = Centetodon altidens Marsh 1872 placental
 Theriamorpha -
Vulpavus canavus Cope 1881 placental
Vulpavus cf. australis Matthew and Granger 1915 placental
 Theriamorpha - Viverravidae
Didymictis altidens Cope 1880 placental
 Artiodactyla - Diacodexeidae
Bunophorus sinclairi2 Guthrie 1966 even-toed ungulate
 Perissodactyla - Brontotheriidae
Lambdotherium popoagicum Cope 1880 brontothere
 Perissodactyla - Palaeotheriidae
Hyracotherium sp. Owen 1841 odd-toed ungulate
"F"
 Perissodactyla -
Heptodon posticus Cope 1882 odd-toed ungulate
 Rodentia - Ischyromyidae
Acritoparamys pattersoni1 Wood 1962 rodent
Mytonomys coloradensis1 Wood 1962 rodent
Paramys excavatus Loomis 1907 rodent