Where: Utah (39.3° N, 113.3° W)

• Paleocoordinates: 31.2° N, 131.0° W (Wright 2013)

• coordinate stated in text

• small collection-level geographic resolution

When: Ptychagnostus gibbus trilobite zone, Wheeler Shale Formation, Dyeran to Dyeran (515.3 - 497.0 Ma)

• "3 cm thick shaly layer associated with the trilobite Peronopsis interstricta, which is directly above a limestone bed, and about 60 metres below the lowest limestone of the Marjum Formation." PJW: Was Marjum, but this says that it's below the Marjum. That would be Wheeler. This is Topazan, but we cannot seem to enter that age.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore shelf; shale

Size class: mesofossils

Collected by R.P.S. Jefferies, E. Cole, and K. Peterson in March, 1992

Primary reference: P. E. J. Daley. 1996. The first solute which is attached as an adult: a Mid-Cambrian fossil from Utah with echinoderm and chordate affinities. Zoological Journal of the Linnean Society 117(4):405-440 [P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 193607: authorized by Phil Novack-Gottshall, entered by Phil Novack-Gottshall on 31.05.2018

Creative Commons license: CC0 (CC0)