Where: California (40.1° N, 120.8° W: paleocoordinates 32.5° N, 59.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Hardgrave Formation, Aalenian (174.1 - 170.3 Ma)

• Formation is Ludwigian in age according to Crickmay's 1933 report on Mt. Jura

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, volcaniclastic, shelly/skeletal, red sandstone

Size class: macrofossils

Reposited in the GSC

Primary reference: C. H. Crickmay. 1933. Attempt to Zone the North American Jurassic on the Basis of its Brachiopods. Geological Society America Bulletin 44:871-894 [M. Clapham/M. Manojlovic]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 164678: authorized by Matthew Clapham, entered by Marko Manojlovic on 10.12.2014

Creative Commons license: CC BY (attribution)