CICIMURRI & EVERHART, 2001/MARTIN & KENNEDY, 1988

Locality: Kansas.

Horizon: Gammon Ferruginous Member, Pierre Shale.

Biostratigraphy:

Age: Late Cretaceous.

Material:

SDSM 14267: Fragmentary specimen.
Note: Gastroliths and teleost fish fragments.

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EVERHART, 2005

Locality: Site 1 and Site 2, respectively south and west of the town of Belvidere, Southeastern Kiowa County, Kansas.

Horizon: Kiowa Shale.

Biostratigraphy:

Age: Albian Stage, middle Gallic subepoch, lower Cretaceous Epoch, Early Cretaceous.

Material:
FHSM VP-15714, 15719: Over 200 gastroliths.

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SATO, EBERTH, NICHOLLS & MANABE, 2005

Locality: BB102, Dinosaur Provincial Park, Alberta Province, Canada.

Horizon: Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.

Material:

RTMP 2002.12.1: 23 polished pebbles.
Note: Freshwater.