Yen locality B4 (Eocene of the United States)

Where: Sweetwater County, Wyoming (41.1° N, 109.9° W: paleocoordinates 45.1° N, 96.2° W)

• coordinate stated in text

When: Bridger Formation, Bridgerian (50.3 - 46.2 Ma)

• no formation given in original publication, but area now mapped as Bridger Formation. In or above Lone Tree white layer.

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: T.-C. Yen. 1948. Eocene fresh-water Mollusca from Wyoming. Journal of Paleontology 22(5):634-640 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 191225: authorized by Patricia Holroyd, entered by Patricia Holroyd on 17.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

 Architaenioglossa - Viviparidae
 Basommatophora - Planorbidae
Australorbis spectabilis Meek 1860 pulmonate
Vertebrata indet. Lamarck 1801
vertebrate specimen Gazin field no. 74-41