Where: Woodbury County, Iowa (42.5° N, 96.5° W: paleocoordinates 40.4° N, 57.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Graneros Shale Formation, Late/Upper Cenomanian (99.6 - 93.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Graneros Shale, which regionally overlies the Dakota Fm (Cenomanian), and is overlain by the Greenhorn Fm (Turonian). AGE: Late Cenomanian, on the basis of inoceramids biostratigraphy. STRATIGRAPHIC POSITION: From the basal part of the formation.

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified shale

Size class: macrofossils

Preservation: mold/impression, concretion

Reposited in the USNM

Collection methods: surface (in situ),

• COLLECTOR: Not stated in text. REPOSITORY: USNM.

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 88009: authorized by Austin Hendy, entered by Austin Hendy on 30.03.2009, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)