Where: San Bernardino County, California (35.8° N, 115.9° W: paleocoordinates 0.0° N, 0.0° E)

• coordinate stated in text

When: "upper" Member (Beck Spring Formation), Tonian (1000.0 - 850.0 Ma)

• "Nannofossils occur in bedded cherts 1.5 m and 18.5 m beneath the Kingston Peak contact."

•ages based on underlying Horse Thief Springs Formation, and overlying Kingston Peak Formation, from Mahon et al., 2014

Environment/lithology: marine; lithified, stromatolitic, oncoidal, black chert and lithified, stromatolitic, gray, cherty/siliceous dolomite

Size class: microfossils

Preservation: permineralized, replaced with silica, replaced with hematite

Collected by P. E. Cloud and L. A. Wright in 1966

Primary reference: G. R. Licari. 1978. Biogeology of the Late Pre-Phanerozoic Beck Spring Dolomite of Eastern California. Journal of Paleontology 52(4):767-792 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 208336: authorized by Jonathan Marcot, entered by Jonathan Marcot on 27.03.2020

Creative Commons license: CC BY (attribution)