William Winkley Ranch, Powder Hill (Cretaceous of the United States)

Where: Carter County, Montana (45.8° N, 105.0° W: paleocoordinates 52.3° N, 78.1° W)

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Winkey, Peck, & Nielsen in 1940; reposited in the AMNH

Collection methods: quarrying, mechanical,

• Found by William Winkley, and collected by W. H. Peck & Thomas G. Nielsen, 1940

Primary reference: B. Brown and E. M. Schlaikjer. 1943. A study of the troƶdont dinosaurs with the description of a new genus and four new species. Bulletin of the American Museum of Natural History 82(5):115-150 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 47627: authorized by Matthew Carrano, entered by Matthew Carrano on 28.02.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

 Neornithischia - Pachycephalosauridae
"Pachycephalosaurus grangeri n. gen. n. sp." = Pachycephalosaurus wyomingensis
"Pachycephalosaurus grangeri n. gen. n. sp." = Pachycephalosaurus wyomingensis Gilmore 1931 ornithischian
AMNH 1696