Also known as Sohl and Koch OFR # 771

Where: Medina County, Texas (29.5° N, 98.8° W: paleocoordinates 35.2° N, 77.9° W)

• outcrop-level geographic resolution

When: Discoscaphites conradi ammonoid zone, Corsicana Marl Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• Haustator bilira assemblage zone

• formation-level stratigraphic resolution

Environment/lithology: marine; glauconitic claystone

Size class: mesofossils

Preservation: original calcite

Collected by L.W. Stephenson; reposited in the USNM

• Stephenson collection

Primary reference: C. W. Cooke. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254-A:1-44 [W. Kiessling/U. Merkel/M. Clapham]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 4520: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999, edited by Uta Merkel

Creative Commons license: CC BY (attribution)