A-9 (Cretaceous of the United States)

Also known as Deaderick Collection AM 217

Where: Hempstead County, Arkansas (33.7° N, 93.7° W: paleocoordinates 38.3° N, 71.3° W)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

When: Veenia parallelopora other zone, Arkadelphia Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; unlithified marl and unlithified claystone

• "normal marine environment with no influence of freshwater." No specific lithology information for this sample, but the formation is largely clays and marls.

Size class: microfossils

Preservation: original calcite

Collected by W. H. Deaderick

Collection methods: bulk, mechanical,

Primary reference: K. Pitakpaivan and J. E. Hazel. 1994. Ostracodes and chronostratigraphic position of the Upper Cretaceous Arkadelphia formation of Arkansas. Journal of Paleontology 68(1):111-122 [G. Hunt/G. Hunt]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 190587: authorized by Gene Hunt, entered by Gene Hunt on 12.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list