Where: Plumas County, California (40.1° N, 120.8° W: paleocoordinates 33.5° N, 60.5° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Mormon Formation, Bajocian (170.3 - 168.3 Ma)
• LITHOSTRATIGRAPHY: From Mormon Sandstone in text; assigned to Mormon, following less antiquated references. AGE: early Middle Jurassic in text; assigned to Bajocian following less antiquated references.
Environment/lithology: marine; sandstone
Size class: macrofossils
Collection methods: surface (float), surface (in situ),
• COLLECTORS: unknown. REPOSITORY: unknown, but formally of Johns Hopkins University.
Primary reference: U. S. Grant and L. G. Hertlein. 1938. The West American Cenozoic Echinoidea. Publications of the University of California at Los Angeles in Mathematical and Physical Sciences 2:1-225 [L. Villier/L. Villier]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 156330: authorized by Austin Hendy, entered by Austin Hendy on 18.05.2014
Creative Commons license: CC BY (attribution)