Where: Bollinger County, Missouri (37.3° N, 90.0° W: paleocoordinates 40.2° N, 59.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Late/Upper Santonian to Late/Upper Santonian (85.8 - 70.6 Ma)

• Has previously been assigned to the McNairy Sand, within the Ripley Formation, but this is uncertain, and most authors consider the bed to be an unnamed smectite clay unit overlapping in age with the Coffee Sand, Mooreville Chalk, and Blufftown formations, and local in extent.

• bed-level stratigraphic resolution

Environment/lithology: karst; poorly lithified, black, blue claystone

Size classes: macrofossils, mesofossils

Collected by D. Stewart, M. Mehl, B. Stinchcomb in 1940-1942, 1972, 1987–1988; reposited in the USNM

Collection methods: bulk, quarrying, surface (in situ), mechanical, sieve,

Primary reference: E. B. Branson. 1942. Dinosaur from the Cretaceous of Missouri. Bulletin of the Geological Society of America 53:1841 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45679: authorized by Matthew Carrano, entered by Matthew Carrano on 23.11.2004

Creative Commons license: CC BY (attribution)