UCMP 1082a, Bald Peak Site 1 (Miocene of the United States)

Where: Contra Costa County, California (37.9° N, 122.2° W: paleocoordinates 37.1° N, 117.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Siesta Formation, Miocene (23.0 - 5.3 Ma)

Environment/lithology: terrestrial; siliciclastic sediments

Size class: macrofossils

Reposited in the UCMP

Primary reference: R. A. Stirton. 1939. Cenozoic Mammal Remains From the San Francisco Bay Region. University of California Publications, Bulletin of the Department of Geological Sciences 24(13):339-410 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 19146: authorized by John Alroy, entered by John Alroy on 26.03.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Artiodactyla - Tayassuidae
Tayassuinae indet. Palmer 1897 peccary
"Prosthennops"
 Rodentia - Castoridae
"Eucastor lecontei n. sp." = Prodipoides lecontei
"Eucastor lecontei n. sp." = Prodipoides lecontei Merriam 1896 beaver
see Stirton 1935; mentioned also by Creely et al. 1982
 Lagomorpha - Leporidae
Leporidae indet. Fischer de Waldheim 1817 rabbit