Also known as F54

Where: Perkins County, South Dakota (45.7° N, 102.1° W: paleocoordinates 51.6° N, 75.6° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• lower part of formation

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by D. Winchester, C. Hares, E. Lloyd & E. Parks in 1911–1912

Collection methods: surface (float),

Primary reference: D. E. Winchester, C. J. Hares, E. R. Lloyd and E. M. Parks. 1916. The lignite field of northwestern South Dakota. United States Geological Survey Bulletin 627:1-169 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 150895: authorized by Matthew Carrano, entered by Matthew Carrano on 17.09.2013

Creative Commons license: CC BY (attribution)