Where: Fall River County, South Dakota (43.4° N, 103.3° W: paleocoordinates 49.3° N, 71.3° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Gammon Ferruginous Member (Pierre Shale Formation), Early/Lower Campanian (83.5 - 70.6 Ma)

• member-level stratigraphic resolution

Environment/lithology: deep-water; concretionary shale

Size classes: macrofossils, mesofossils

Reposited in the SDSM

Collection methods: surface (in situ),

Primary reference: J. E. Martin and L. E. Kennedy. 1988. A plesiosaur with stomach contents from the Late Cretaceous (Campanian) Pierre Shale of South Dakota: a prelimiinary report. Proceedings of the South Dakota Academy of Sciences 67:76-79 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35333: authorized by John Alroy, entered by Erin Leckey on 01.12.2003

Creative Commons license: CC BY (attribution)