Also known as Bristolia bristolensis s. acme zonule, CA - Fowler 1999

Where: Inyo County, California (35.8° N, 116.2° W: paleocoordinates 1.8° S, 97.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bristolia bristolensis trilobite zone, Echo/Eagle Shale Member (Carrara Formation), Dyeran (515.3 - 511.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified shale

Size class: macrofossils

Collection methods: Specimens from this site are split into an informal zonation. The zonation utilizes both acme and occurrence zonules, and subdivides some zonules into numbered subunits based on clearly distinguishable assemblages. However, relative species abundances, although reflected to some extent in the biostratigraphic zonation, are not listed. Only trilobites are included in the faunal list. The zonule name will be listed in the Zone datafield.

Primary reference: E. D. Fowler. 1999. Biostratigraphy of upper Dyeran strata of the Carrara Formation, Emigrant Pass, Nopah Range, California. Laurentia 99: V field conference of the Cambrian Stage Subdivision Working Group, International Subcomission on Cambrian Stratigraphy 46-50 [M. Patzkowsky/P. Borkow]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 10609: authorized by Mark Patzkowsky, entered by Phil Borkow on 29.05.2001

Creative Commons license: CC BY (attribution)