ammonites
P-14 (Brazos River K-T boundary, TX) (Paleocene of the United States)

Where: Falls County, Texas (31.3° N, 97.0° W: paleocoordinates 36.0° N, 77.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Biscutum romeini zone, Danian (65.5 - 61.7 Ma)

• composite section from CM-4 and Brazos-1, in foram zone P1a

Environment/lithology: marine; unlithified, bioturbated, silty claystone

• homogenized (from bioturbation) silty claystone with sparse fossils (hansen et al. 1987)

Size class: mesofossils

Collection methods: bulk, mechanical,

Primary reference: T. A. Hansen, B. Upshaw III, E. G. Kauffman and W. Gose. 1993. Patterns of molluscan extinction and recovery across the Cretaceous-Tertiary boundary in east Texas; report on new outcrops. Cretaceous Research 14:685-706 [A. Miller/K. Layou] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5584: authorized by Arnold Miller, entered by Karen Layou on 18.10.1999