Where: Niobrara County, Wyoming (43.0° N, 105.5° W: paleocoordinates 49.6° N, 80.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• In the lowest levels or "basal sandstones" of the series

• bed-level stratigraphic resolution

Environment/lithology: fluvial; sandstone

Size class: macrofossils

Preservation: mold/impression, soft parts

Collected by G. Sternberg & L. Sternberg in 1908; reposited in the AMNH

Collection methods: quarrying, mechanical,

• purchased for AMNH via Morris K. Jesup Fund

Primary reference: C. H. Sternberg. 1909. Expedition to the Laramie beds of Converse County, Wyoming. Transactions of the Kansas Academy of Science 22:113-116 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 57764: authorized by Matthew Carrano, entered by Kaitlin Maguire on 21.12.2005, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)