Where: Amador County, California (38.3° N, 120.8° W: paleocoordinates 33.3° N, 67.0° W)

• coordinate estimated from map

When: Late/Upper Jurassic (161.5 - 145.0 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: R. W. Imlay. 1961. Late Jurassic ammonites from the western Sierra Nevada, California. United States Geological Survey Professional Paper 374-D:D-1-D-28 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 192831: authorized by Jonathan Marcot, entered by Jonathan Marcot on 20.04.2018

Creative Commons license: CC BY (attribution)