Where: Logan County, Kansas (38.7° N, 101.2° W: paleocoordinates 44.2° N, 70.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Smoky Hill Chalk Member (Niobrara Formation), Late/Upper Santonian to Late/Upper Santonian (85.8 - 70.6 Ma)

• "probably collected between Marker Unit 15 nd 19"; upper part of member

• bed-level stratigraphic resolution

Environment/lithology: offshore; carbonate

Size class: macrofossils

Preservation: adpression

Collected by C. H. Sternberg in 1918

Primary reference: C. Wiman. 1920. Some reptiles from the Niobrara Group in Kansas. Bulletin of the Geological Institute of the University of Uppsala 18:9-18 [R. Butler/R. Butler] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93391: authorized by Richard Butler, entered by Richard Butler on 18.01.2010