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, Trail City Member (Fox Hills Formation), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Trail City Mbr of the Fox Hills Fm, which overlies the Pierre Shale, and is overlain by the Hell Creek Fm. AGE: Late Maastrichtian, on the basis of ammonoid biostratigraphy; Hoploscaphites nicolletii zone. STRATIGRAPHIC POSITION: From unknown position within the member.

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, argillaceous siltstone

Size class: macrofossils

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 88510: authorized by Austin Hendy, entered by Austin Hendy on 13.04.2009

Creative Commons license: CC BY (attribution)