Where: Plumas County, California (40.1° N, 120.7° W: paleocoordinates 19.6° N, 56.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Brock Shale Formation, Sevatian (212.0 - 205.6 Ma)

• Probably Sevatian based on co-occurrence of Rhabdoceras suessi and Monotis, but possibly Alaunian.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Collected by W.H. Brewer, C.R. King in 1863

Primary reference: W. M. Gabb. 1864. Description of the Triassic fossils of California and the adjacent territories. Geological Survey of California Palaeontology 1:19-35 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 33365: authorized by David Bottjer, entered by Catherine Powers on 28.07.2003, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)