Landslide Butte Field Area (MOR TM-060) (Cretaceous of the United States)

Where: Glacier County, Montana (49.0° N, 112.6° W: paleocoordinates 56.6° N, 78.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Upper Member (Two Medicine Formation), Late/Upper Campanian (83.5 - 70.6 Ma)

• "upper lithofacies suite", approx. 20 m below Bearpaw Fm.

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; siltstone

Size class: macrofossils

Collected by S. Hofsteader, J. Horner & C. Ancell in 1987

Collection methods: quarrying, mechanical,

Primary reference: S. D. Sampson. 1994. Two new horned dinosaurs (Ornithischia: Ceratopsidae) from the Upper Cretaceous Two Medicine Formation, Montana, USA. Journal of Vertebrate Paleontology 14(3, suppl.):44A [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 52435: authorized by Matthew Carrano, entered by Matthew Carrano on 05.08.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

 Neornithischia - Ceratopsidae
Achelousaurus horneri n. gen. n. sp.
Achelousaurus horneri n. gen. n. sp. Sampson 1994 ceratopsid
MOR 485