Where: McCone County, Montana (48.0° N, 105.6° W: paleocoordinates 54.4° N, 78.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• "Upper sandstone, 'Hell Creek Beds,' Lance formation, Upper Cretaceous"

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by B. Brown in 1909; reposited in the AMNH

Primary reference: C. W. Gilmore. 1911. A new fossil alligator from the Hell Creek Beds of Montana. Proceedings of the United States National Museum 41(1860):297-302 [M. Carrano/M. Carrano/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 100110: authorized by John Alroy, entered by John Alroy on 29.11.2010

Creative Commons license: CC BY (attribution)