Where: Missouri (38.8° N, 91.9° W: paleocoordinates 34.5° S, 39.5° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Synder 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

Collection methods: Original collecting localities flooded by damn, these specimens examined from museum collection.

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 3951: authorized by John Alroy, entered by Mike Sommers on 12.08.1999

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