Where: Washington County, Missouri (37.9° N, 90.7° W: paleocoordinates 22.8° S, 86.4° W)

• local area-level geographic resolution

When: Conaspis zone, Davis Formation, Franconian (497.0 - 485.4 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified dolomite and shale

Collection methods: Collection name 977.42-01 means notebook 977, the section described beginning on page 42 of the notebook, and the first collection up from the base of the section.

Primary reference: V. E. Kurtz. 1975. Franconian (Upper Cambrian) trilobite faunas from the Elvins Group of Southeast Missouri. Journal of Paleontology 49(6):1009-1043 [M. Patzkowsky/P. Borkow/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 9149: authorized by Mark Patzkowsky, entered by Phil Borkow on 27.09.2000

Creative Commons license: CC BY (attribution)