Where: Calaveras County, California (38.0° N, 120.6° W: paleocoordinates 32.7° N, 66.4° W)

• coordinate estimated from map

When: Mariposa Formation, Late/Upper Oxfordian to Late/Upper Oxfordian (161.2 - 150.8 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by Cooper Curtice in 1891

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 192835: authorized by Jonathan Marcot, entered by Jonathan Marcot on 20.04.2018

Creative Commons license: CC BY (attribution)