Where: Archuleta County, Colorado (37.1° N, 107.0° W: paleocoordinates 44.0° N, 77.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Lewis Shale Formation, Campanian (83.6 - 72.1 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; concretionary, silty limestone and poorly lithified, black mudstone

Size class: macrofossils

Preservation: concretion

Collected by Robert York

Primary reference: B. S. Kues and S. G. Lucas. 1985. Mosasaur remains from the Lewis Shale (Upper Cretaceous), Southwestern Colorado. Journal of Paleontology 59(6):1395-1400 [M. Carrano/H. Street]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 99494: authorized by Matthew Carrano, entered by Hallie Street on 13.11.2010

Creative Commons license: CC BY (attribution)