Where: Lyon County, Minnesota (44.5° N, 95.9° W: paleocoordinates 43.9° N, 58.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Turonian (93.9 - 89.8 Ma)

• STRATIGRAPHIC RELATIONS: From the Carlise Shale, which regionally overlies the Greenhorn Fm (Turonian), and is overlain by the Niobrara Fm. AGE: Middle-Late Turonian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From 11 m below surface.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary, ferruginous claystone

Size class: macrofossils

Preservation: concretion

Collection methods: surface (float),

• COLLECTOR: Unknown. REPOSITORY: UMIP, University of Minnesota.

Primary reference: W. A. Cobban. 1983. Molluscan fossil record from the northeastern part of the Upper Cretaceous seaway, Western Interior. United States Geological Survey Professional Paper 1253:1-25 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88021: authorized by Austin Hendy, entered by Austin Hendy on 30.03.2009

Creative Commons license: CC BY (attribution)