Billy Creek, CM Loc. 982 (Cretaceous of the United States)

Where: Garfield County, Montana (47.7° N, 107.3° W: paleocoordinates 54.6° N, 79.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Hell Creek Formation (Montana Group), Maastrichtian (72.1 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by A. D. McCrady & crew in 1978; reposited in the CM, LACM

Collection methods: surface (float),

Primary reference: W. P. Wall and P. M. Galton. 1979. Notes on pachycephalosaurid dinosaurs (Reptilia: Ornithischia) from North America, with comments on their status as ornithopods. Canadian Journal of Earth Sciences 16:1176-1186 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 72143: authorized by Matthew Carrano, entered by Matthew Carrano on 25.05.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Neornithischia - Pachycephalosauridae
Stegoceras sp. Lambe 1902 ornithischian
LACM 15345
 Neornithischia - Ceratopsidae
Triceratops sp.1 Marsh 1889 ceratopsid
CM 85811, R scapula; 85853–5
 Neornithischia - Hadrosauridae
Edmontosaurus sp.2 Lambe 1917 hadrosaurine
CM 38355