Also known as TMM 40143

Where: Brewster County, Texas (29.2° N, 103.2° W: paleocoordinates 33.5° N, 89.1° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Hannold Hill Formation (Tornillo Group), Wasatchian (55.8 - 50.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Reposited in the TMM

Primary reference: J. A. Schiebout, C. A. Rigsby, S. D. Rapp, J. A. Hartnell, and B. R. Standhardt. 1987. Stratigraphy of the Cretaceous-Tertiary and Paleocene-Eocene transition rocks of Big Bend National Park, Texas . Journal of Geology 95(3):359-375 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 15585: authorized by John Alroy, entered by John Alroy on 15.05.2002

Creative Commons license: CC BY (attribution)