Bear Creek/Rock Creek (UMMP) (Cretaceous of the United States)

Also known as Fort Peck

Where: McCone County, Montana (47.8° N, 106.2° W: paleocoordinates 54.4° N, 79.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• near boundary with Ft. Union Fm.

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by E. C. Case, W. H. Buettner, & J. A. Wilson in 1938; reposited in the UMMP

Collection methods: quarrying, surface (in situ), mechanical,

• collected by E. C. Case, W. H. Buettner, and J. A. Wilson

Primary reference: R. S. Lull and N. E. Wright. 1942. Hadrosaurian dinosaurs of North America. Geological Society of America Special Paper 40:1-242 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 67129: authorized by Matthew Carrano, entered by Matthew Carrano on 09.11.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

 Acipenseriformes - Polyodontidae
Paleopsephurus wilsoni n. gen. n. sp.2
Paleopsephurus wilsoni n. gen. n. sp.2 MacAlpin 1947 paddlefish
 Acipenseriformes - Acipenseridae
Protoscaphirhynchus squamosus n. gen. n. sp.2 Wilimovsky 1956
 Neornithischia - Ceratopsidae
Triceratops sp.1 Marsh 1889 ceratopsid
UM 17062 + rib specimen
 Neornithischia - Hadrosauridae
"Anatosaurus sp." = Edmontosaurus
"Anatosaurus sp." = Edmontosaurus Lambe 1917 hadrosaurine
UM exhibit specimen