M-1, Marble Mountains (Cambrian of the United States)

Where: San Bernardino County, California (34.6° N, 115.5° W: paleocoordinates 2.1° S, 96.8° W)

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

• Fauna from grayish, somewhat yellowish-weathering thin-bedded limestones just below the base of the massive, bluish gray limestone (Goodsprings formation) which forms the upper portion of the ridge.

Environment/lithology: gray, yellow, blue limestone and cherty/siliceous shale

• Fauna from grayish, somewhat yellowish-weathering thin-bedded limestones just below the base of the massive, bluish gray limestone (Goodsprings formation) which forms the upper portion of the ridge.

Size classes: macrofossils, mesofossils

Preservation: cast, mold/impression

Collected by J. C. Hazzard in Summer, 1930

• In the course of the investigation fossils were collected from the Lower and Middle Cambrian rocks in the area immediately north of Cadiz, California, and from the Lower Cambrian formations exposed at the west base of the Providence Mountains east of Kelso, about 30 miles north of Cadiz. These collections were studied by Dr. Colin Crickmay, University of Illinois, who has written the report on the paleontology.

Primary reference: J. C. Hazzard and C. H. Crickmay. 1933. Notes on the Cambrian rocks of the eastern Mohave Desert, California . University of California Publications Bulletin of the Department of Geological Sciences 23(2):57-80 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 219690: authorized by Jonathan Marcot, entered by Jonathan Marcot on 18.04.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Ptychopariida - Acrocephalitidae
Acrocephalites sp. Wallerius 1895 trilobite
 Corynexochida - Dolichometopidae
Glossopleura mohavensis Resser 1935 trilobite
Bathyuriscus belesis Walcott 1916 trilobite
"Dolichometopus lodensis" = Anoria lodensis Clark 1921 trilobite