Eagle Nest Butte (Sharps Fm.) ( of the United States)

Where: Jackson County, South Dakota (43.5° N, 101.9° W: paleocoordinates 44.3° N, 96.0° W)

• coordinate based on political unit

When: Sharps Formation, Arikareean (29.5 - 18.5 Ma)

• "Precise locality data are unknown, but Schultz and Falkenbach (1968, p. 332) argue that it is from the “Gering Formation” (actually lower Sharps Formation, a unit that Schultz and Falkenbach refused to recognize) near Eagle Nest Butte, Washabaugh County, South Dakota." Prothero and Sanchez 2008

Environment/lithology: fluvial; lithology not reported

Size class: macrofossils

Primary reference: W. B. Scott. 1940. The mammalian fauna of the White River Oligocene; Part 4, Artiodactyla; Part 5, Perissodactyla. Transactions of the American Philosophical Society 28(4):363-746 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 17496: authorized by John Alroy, entered by John Alroy on 19.05.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• several miles SE of Interior according to Martin 1985
Washabaugh Co. according to Schultz and Falkenbach 1968
Show authors, comments, and common names
Mammalia
 Artiodactyla - Merycoidodontidae
Leptauchenia decora n. sp., Leptauchenia major n. sp., "Leptauchenia nitida n. sp." = Sespia nitida
Leptauchenia decora n. sp. Leidy 1856 oreodont
Leptauchenia major n. sp. Leidy 1856 oreodont
from "lower Gering" equivalent according to Schultz and Falkenbach 1968
"Leptauchenia nitida n. sp." = Sespia nitida Leidy 1869 oreodont
"Near Eagle Nest Butte"