Roundhouse Rock (Oligocene of the United States)

Also known as UNSM Mo-104

Where: Morrill County, Nebraska (41.7° N, 103.1° W: paleocoordinates 42.7° N, 95.7° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Whitney Member (Brule Formation), Whitneyan (33.3 - 30.8 Ma)

Environment/lithology: terrestrial

Reposited in the UNSM

Primary reference: L. G. Tanner. 1973. Notes Regarding Skull Characteristics of Oxetocyon cuspidatus Green. Transactions of the Nebraska Academy of Sciences 2:66-69 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 17374: authorized by John Alroy, entered by John Alroy on 05.08.1996, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Perissodactyla - Rhinocerotidae
Skinneroceras manningi n. gen. n. sp.1
Skinneroceras manningi n. gen. n. sp.1 Prothero 2005 rhinoceros
 Artiodactyla - Merycoidodontidae
"Hadroleptauchenia shanafeltae n. gen. n. sp." = Leptauchenia major4, "Leptauchenia decora" = Leptauchenia decora2, "Hadroleptauchenia primitiva" = Leptauchenia decora2
"Hadroleptauchenia shanafeltae n. gen. n. sp." = Leptauchenia major4 Leidy 1856 oreodont
"Leptauchenia decora" = Leptauchenia decora2 Leidy 1856 oreodont
also their "Pithecistes tanneri"; both UNSM Mo-104, "Brule Zone D"
"Hadroleptauchenia primitiva" = Leptauchenia decora2 Leidy 1856 oreodont
UNSM Mo-104 "E. side of Roundhouse Rock" in "Brule Zone D"
 Carnivora - Canidae
Hesperocyon gregarius3 Cope 1873 canid
KU-NE-034, Roundhouse Rock, Morrill Co., Whitneyan
"Cormocyon pavidus" = Archaeocyon pavidus5 Stock 1933 bone-crushing dog
E side of Roundhouse Rock, 5 mi SW of Bridgeport, Morrill Co. NE "in upper part of the Whitney Member"; see also Wang et al. 1999
Oxetocyon cuspidatus Green 1954 bone-crushing dog
UNSM Mo-104 "base of Roundhouse Rock" in the Whitney Mbr.