Logan County (Cretaceous of the United States)

Where: Logan County, Kansas (39.0° N, 101.2° W: paleocoordinates 44.5° N, 71.0° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Sharon Springs Member (Pierre Shale Formation), Middle Campanian (83.5 - 70.6 Ma)

• The age of the formation [member] is considered to be early middle Campanian (Gill et al., 1972; Cobban, 1993; Parrish and Gautier, 1993).

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified shale

Size class: macrofossils

Collected in 1966; reposited in the LACM

Collection methods: mechanical

Primary reference: T. D. Cook, M. G. Newbrey, A. M. Murray, M. V. H. Wilson, K. Shimada, G. T. Takeuchi, and J. D. Stewart. 2011. A Partial Skeleton of the Late Cretaceous Lamniform Shark, Archaeolamna kopingensis, from the Pierre Shale of Western Kansas, U.S.A. Journal of Vertebrate Paleontology 31(1):8-21 [S. Peters/S. McMullen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 136267: authorized by Shanan Peters, entered by Sharon McMullen on 25.11.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Lamniformes - Archaeolamnidae
Archaeolamna kopingensis Davis 1890 mackerel shark