Where: Utah (39.0° N, 113.0° W: paleocoordinates 4.5° S, 91.9° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Bolaspidella trilobite zone, Marjum Formation, Marjumian (504.5 - 497.0 Ma)

• Listed as Upper to Middle Cambrian; Bolaspidella biozone (Marjumian; PJW)

• bed-level stratigraphic resolution

Environment/lithology: slope; poorly lithified, lenticular, silty, calcareous shale

Size classes: macrofossils, mesofossils

Preservation: trace, soft parts

Primary reference: D. E. G. Briggs and R. A. Robison. 1984. Exceptionally preserved nontrilobite arthropods and Anomalocaris from the Middle Cambrian of Utah. University of Kansas Paleontological Contributions 111:1-23 [P. Novack-Gottshall/P. Hearn/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 77207: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 31.12.2007

Creative Commons license: CC BY (attribution)