Where: San Bernardino County, California (34.5° N, 115.5° W: paleocoordinates 2.1° S, 96.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Cadiz Formation, Delamaran (511.2 - 506.5 Ma)

• The stratigraphy of the formation has been fully dealt with in the reports of Hazzard and Hazzard and Mason. As established in the latter, the Cadiz formation consists of the upper 375 feet of the quartzite and shale unit originally noted as containing both Lower and Middle Cambrian fossils. The lower 100 feet of the unit as originally described is not included within the Cadiz formation as it is known to contain Mesonacidae. The exact contact between the Lower and Middle Cambrian beds has not been determined, but it is placed provisionally, at a buff, oolitic limestone and limy, glauconitic sandstone horizon about 100 feet above the top of the Lower Cambrian algal limestone. The fossils of the present report came from a thin-bedded limestone which weathers into small buff- colored blocks and plates, and from an underlying green shale. The thin-bedded limestone is immediately overlain by the heavy, dark gray limestone of the Bonanza King formation (Middle Cambrian). The green shale is probably not more than 50 feet lower in the formation. PJW: The Brisolia zone is now the Latham Shale

•

•JDM: The "thin-bedded limestone" is the Middle Cambrian Cadiz Formation, green shale is the Dyeran Latham Shale.

• formation-level stratigraphic resolution

Environment/lithology: marine; limestone and green shale

Size classes: macrofossils, mesofossils

Collected by John H. Bradley and John F. Mason in 1934

Primary reference: J. F. Mason. 1935. Fauna of the Cambrian Cadiz Formation, Marble Mountains, California. Bulletin of the Southern California Academy of Sciences 34(2):97-120 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 191414: authorized by Jonathan Marcot, entered by Jonathan Marcot on 28.01.2018

Creative Commons license: CC BY (attribution)