Where: Callaway County, Missouri (38.7° N, 92.1° W: paleocoordinates 34.5° S, 39.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Snyder Creek Shale Formation, Frasnian (383.7 - 376.1 Ma)

• Senecan series, Chemung stage (local).

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, calcareous shale and limestone

Primary reference: A. L. McAlester. 1963. Pelecypods of the Snyder Creek Shale (Upper Devonian) of Missouri. Journal of Paleontology 37(5):981-999 [J. Alroy/M. Sommers/J. Alroy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 3945: authorized by John Alroy, entered by Mike Sommers on 11.08.1999, edited by Alycia Stigall

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)