Where: South Dakota (45.1° N, 100.9° W: paleocoordinates 50.8° N, 74.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Hoploscaphites nicolletii ammonoid zone, Elk Butte Member (Pierre Shale Formation), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Elk Butte Mbr of the Pierre Shale Fm, which is overlain by the Fox Hills Fm. AGE: Late Maastrichtian, on the basis of ammonoid biostratigraphy; Hoploscaphites nicolletii zone. STRATIGRAPHIC POSITION: List is representative of member.

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary, sideritic shale

Size class: macrofossils

Preservation: concretion, replaced with siderite

Reposited in the YPM

Collection methods: surface (in situ),

• COLLECTOR: Multiple collectors. REPOSITORY: Many repositories, including YPM.

Primary reference: N. H. Landman and K. M. Waage. 1993. Scaphitid ammonites of the Upper Cretaceous (Maastrichtian) Fox Hills Formation in South Dakota and Wyoming. Bulletin of the American Museum of Natural History 215:1-257 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88512: authorized by Austin Hendy, entered by Austin Hendy on 13.04.2009

Creative Commons license: CC BY (attribution)