Where: Sioux County, Nebraska (42.8° N, 103.6° W: paleocoordinates 44.1° N, 95.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Peanut Peak Member (Chadron Formation), Chadronian to Chadronian (37.2 - 33.3 Ma)

• at the contact between exposures of the middle Chadronian, Peanut Peak Member of the Chadron Formation, and the undifferentiated Holocene-Pleistocene deposits; reported as middle Chadronian, but may include Orellan elements; the presence of Orellan-age taxa indicates a broader temporal sample in the Sand Creek anthills

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Primary reference: M. A. Tornow and T. A. Arbor. 2017. Apatemyids (Mammalia, Apatotheria) from the middle Chadronian (late Eocene) of Sioux County, Nebraska, USA. Palaeontologia Electronica 20.1.9A:1-16 [P. Holroyd/P. Holroyd/P. Holroyd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186970: authorized by Patricia Holroyd, entered by Patricia Holroyd on 08.07.2017

Creative Commons license: CC BY (attribution)