Where: Missouri (38.0° N, 91.5° W: paleocoordinates 23.2° S, 81.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Symphysurina woosteri trilobite zone, Van Buren Member (Gasconade Formation), Gasconadian (485.4 - 477.7 Ma)

• Upper Beds, Lower Member. PJW: This probably is what others call the Van Buren.

• group of beds-level stratigraphic resolution

Environment/lithology: dolomite

Size class: macrofossils

Preservation: cast, replaced with silica

Reposited in the USNM

Primary reference: J., J.r. Pojeta, J. F. Taylor, and G. Darrough. 2005. Matthevia (Polyplacophora) invades the Ordovician: the first reported post-Cambrian occurrence. Journal of Paleontology 79(5):1021-1027 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98347: authorized by Pete Wagner, entered by Pete Wagner on 02.10.2010

Creative Commons license: CC BY (attribution)