USGS Sec. 28, T. 27 N., R. 49 E. (Richland County) (Cretaceous of the United States)

Where: Richland County, Montana (47.8° N, 104.6° W: paleocoordinates 54.1° N, 77.3° W)

• coordinate based on political unit

When: Lance Formation, Lancian (70.6 - 66.0 Ma)

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collected by W. T. Thom in 1920

Primary reference: C. W. Gilmore. 1928. Fossil lizards of North America. Memoirs of the National Academy of Sciences 22(3):1-201 [J. Head/J. Head/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 179991: authorized by Paul Barrett, entered by Terri Cleary on 06.07.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Ceratopsidae
Triceratops sp. Marsh 1889 ceratopsid
 Ornithischia -
Thescelosaurus sp. Gilmore 1913 ornithopod
 Squamata -
Palaeosaniwa canadensis Gilmore 1928 squamates
USNM 11045, posterior dorsal vertebra