Where: Logan County County, Kansas (39.0° N, 101.2° W: paleocoordinates 42.0° N, 67.4° W)

When: Smoky Hill Chalk Member (Niobrara Formation), Late/Upper Coniacian to Late/Upper Coniacian (89.3 - 83.6 Ma)

• Niobrara Chalk. Member unknown, but most probably Smoky Hill Chalk

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by H. A. Brous & B. F. Mudge in 1875; reposited in the YPM

Collection methods: quarrying

Primary reference: G. W. Storrs. 1999. An examination of Plesiosauria (Diapsida: Sauropterygia) from the Niobrara Chalk (Upper Cretaceous) of Central North America. Paleontological Contributions of the University of Kansas 11:1-15 [R. Benson/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 118879: authorized by Roger Benson, entered by Roger Benson on 17.10.2011

Creative Commons license: CC BY (attribution)