1205-C-upper (Pliocene of the United States)

Where: Bonneville, Madison, Teton County, Idaho (43.7° N, 111.3° W: paleocoordinates 43.9° N, 110.5° W)

When: Younger Conglomerate Formation, Pliocene (5.3 - 2.6 Ma)

Environment/lithology: terrestrial; lithified, brown conglomerate and lithified sandstone

• The younger conglomerate is a thick cobble conglomerate which has here and there a few beds and lenses of sandstone. This rock is generally light brown, although in places it may be gray or pale pink. Pebbles and cobbles are subangular to well rounded and range in diameter from 1/8 of an inch to 3.5 feet, although most of them are less than 6 inches in diameter. Many beds are fairly well sorted, the cobbles are being fairly uniform in size, but other beds show little or no sorting.

Size class: macrofossils

Primary reference: M. H. Staatz and H. F. Albee. 1966. Geology of the Garns Mountain Quadrangle Bonneville, Madison, and Teton Counties, Idaho. United States Geological Survey Bulletin (1205) [A. Zaffos/E. Ito]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 184623: authorized by Andrew Zaffos, entered by Erika Ito on 14.03.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Rodentia - Cricetidae
Peromyscus sp. Gloger 1841 deer mouse
 Rodentia - Geomyidae
Pliosaccomys sp. Wilson 1936 pocket gopher
 Carnivora - Mustelidae
Martinogale sp. Hall 1930 skunk