Lance Creek section (Cretaceous of the United States)

Where: Niobrara County, Wyoming (43.3° N, 104.4° W: paleocoordinates 49.9° N, 78.6° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Lance Formation, Maastrichtian (72.1 - 66.0 Ma)

• lower part of formation

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; sandstone

Size classes: macrofossils, mesofossils

Collected by J. Davis in 1907

Primary reference: J. A. Davis. 1912. The Little Powder River coal field, Campbell County, Wyoming. In M. R. Campbell (ed.), Contributions to Economic Geology (Short Papers and Preliminary Reports). Part II.—Mineral Fuels. 1910. United States Geological Survey Bulletin 471:423-515 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 191271: authorized by Matthew Carrano, entered by Matthew Carrano on 19.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Trionychidae
? Aspideretes sp. Hay 1904 softshell turtle
carapace; ID by C. W. Gilmore
 Neornithischia - Ceratopsidae
Triceratops sp. Marsh 1889 ceratopsid
tooth; ID by C. W. Gilmore