GATES, ZANNO, & MAKOVICKY, 2015

Locality: Maurice Williams’s Ranch, Cheyenne River Indian Reservation, near Faith, Meade County, South Dakota.

Horizon: Hell Creek Formation, about 15 feet above the contact with the Fox Hills Formation..

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

FMNH PR 2897: Tooth.

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