Also known as Three-fourths mile north of Corsicana-Chatfield road, and 0.25 mile north of Rock Branch, 3 miles in an air line northeast of Corsicana, Navarro County.

Where: Navarro County, Texas (32.1° N, 96.5° W: paleocoordinates 36.9° N, 68.8° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Nostoceras hyatti ammonoid zone, Nacatoch Sand Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• Stephenson (1941) had this unit as Maastrichtian, Cobban and Kennedy (1995) have updated it to uppermost Campanian via ammonite zonation.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: mesofossils

Reposited in the USGS

• O. B. Hopkins 1915

Primary reference: L. W. Stephenson. 1941. The larger invertebrate fossils of the Navarro group of Texas. The University of Texas Publication 4101:1-625 [M. Kosnik/M. Kosnik]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 7512: authorized by Matt Kosnik, entered by Matt Kosnik on 18.07.2000

Creative Commons license: CC BY (attribution)