Warbonnet Creek (Chadron) (Eocene of the United States)

Also known as Brewster and Emmons Ranch; Warbonnet Ranch

Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.8° N, 95.1° W)

• coordinate based on political unit

When: Chadronian (37.2 - 33.9 Ma)

Environment/lithology: terrestrial

Primary reference: J. Clark and T. E. Guensburg. 1972. Arctoid genetic characters as related to the genus Parictis. Fieldiana 26(1):1-71 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 17040: authorized by John Alroy, entered by John Alroy on 18.10.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• apparently in T33N R56W, i.e., about 18 mi W of the Chadron localities of Ostrander 1985
following records could be from the Chadron, Brule, or Gering: "Merycoidodon" affinis Thorpe 1937 Merycoidodon "culbertsonii" Thorpe 1937: "middle Oligocene" "Phenacocoelus munroensis" Thorpe 1937 "Promerycochoerus" carrikeri Thorpe 1937
Mammalia
 Carnivora - Ursidae
Parictis gilpini Clark and Guensburg 1972 bear
Chadron Fm., Warbonnet Creek
 Artiodactyla - Merycoidodontidae
Miniochoerus chadronensis1 Schultz and Falkenbach 1956 oreodont
 Perissodactyla - Brontotheriidae
Brontops dispar n. sp.3 Marsh 1887 brontothere
from Hat Creek, Sioux Co., said by Osborn 1902 to be from the middle beds of the Chadron Formation; two specimens described by Hatcher 1901b, 1901c from "near the base of the Titanotherium beds on Warbonnet Creek, some three miles north of the Brewster and Emmons Ranch" (latter assigned to "Titanotherium dispar"
 Perissodactyla - Rhinocerotidae
Trigonias osborni2 Lucas 1900 rhinoceros
"near the base of the Titanotherium beds... three miles north of the old Brewster and Emmons Ranch, on Warbonnet creek, Sioux County"; repeated by Wood 1927 as "three miles north of Warbonnet Ranch"