2 to 3 mi N of Denison, type-locality of Duck Creek limestone (Cretaceous of the United States)

Also known as neaby association: 3 mi N of Denison, south bank of Duck Creek, 40 feet above base of Kde type-locality; in marl above Pervinquieria aff. trinodosa

Where: Grayson County, Texas (33.8° N, 96.5° W: paleocoordinates 31.4° N, 49.1° W)

When: Duck Creek Formation, Early/Lower Cretaceous (145.0 - 100.5 Ma)

Environment/lithology: marine; limestone

Size classes: macrofossils, mesofossils

• one specimen, right propodus of cheliped (O. texanus); one right, major chela, holotype (P. cretaceous); one left dactyl, one right immobile finger, paratype (O. comancheensis);

Collected by W.S. Adkins (1142)

• University of Texas, (O. texanus); University of Texas, type, Coll. No. 211 (P. cretaceous, O. comancheensis);

Primary reference: M. J. Rathbun. 1935. Fossil Crustacea of the Atlantic and Gulf Coastal Plain. Geological Society of America Special Paper (2)1-160 [C. Schweitzer/S. Yost]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 141153: authorized by Carrie Schweitzer, entered by Samantha Yost on 21.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Adkins reports having found the species (O. texanus) in first hollow west of Texas Christian University, at exactly the same level as the holotype; January , 1917." - as quoted in reference.

•P. cretaceous, O. comancheensis collected 3 mi N of Denison, on south bank of Duck Creek, in marl above Pervinquieria aff. trinodosa.

Malacostraca
 Decapoda - Nephropidae
Oncopareia texanus Rathbun 1935 clawed lobster
 Decapoda - Aethridae
Prehepatus cretaceous Rathbun 1935 crab
 Decapoda - Retroplumidae
Ophthalmoplax comancheensis Rathbun 1935 crab