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Sohl and Koch OFR # 534 (Cretaceous of the United States)

Also known as Hope; USGS # 8214

Where: Hempstead County, Arkansas (33.8° N, 93.6° W: paleocoordinates 38.4° N, 70.8° W)

• small collection-level geographic resolution

When: Arkadelphia marl Formation, Maastrichtian (70.6 - 66.0 Ma)

• Haustator bilira assemblage zone.

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, silty lime mudstone

Size class: macrofossils

Preservation: original calcite

Reposited in the USGS

• Stephenson collection

Primary reference: N. F. Sohl and C. F. Koch. 1984. Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain. USGS Open File Report 84-687:1-282 [M. Kosnik/M. Kosnik] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 4388: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999

Creative Commons license: CC BY (attribution)