Where: Starr County, Texas (26.9° N, 99.3° W: paleocoordinates 28.4° N, 91.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Jackson Group, Bartonian (41.3 - 38.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: G. D. Harris. 1919. Pelecypoda of the St. Maurice and Claiborne stages. Bulletins of American Paleontology 6(31):1-208 [J. Sessa/L. Eccles]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106485: authorized by Jocelyn Sessa, entered by Laurie Eccles on 21.03.2011

Creative Commons license: CC BY (attribution)