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 (30.8 - 20.4 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
Mammalia
 Artiodactyla - Merycoidodontidae
"Leptauchenia nitida n. sp." = Sespia nitida, Leptauchenia major n. sp., Leptauchenia decora n. sp.
"Leptauchenia nitida n. sp." = Sespia nitida Leidy 1869 oreodont
"Near Eagle Nest Butte"
Leptauchenia major n. sp. Leidy 1856 oreodont
from "lower Gering" equivalent according to Schultz and Falkenbach 1968
Leptauchenia decora n. sp. Leidy 1856 oreodont