Crockett L2: Campbell's Creek, Brazos County, TX (Eocene of the United States)

Where: Campbell's Creek County, Texas (30.7° N, 96.3° W: paleocoordinates 31.9° N, 87.6° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Crockett Formation (Claiborne Group), Bartonian (41.3 - 38.0 Ma)

• Original Description: Middle Eocene: Claiborne Group: Cook Mountain Formation: Crockett Member.

•(Revised stratigraphy elevates the Crockett member to a formation in the Bartonian).

• bed-level stratigraphic resolution

Environment/lithology: marine; concretionary, glauconitic, green marl

• Recent - d. Yellowish-brown, not bedded marl, containing some poorly sorted gravel, especially at the base... 7ft. Cook Mountain Fm., Crockett Member - c. Fresh, light-buff to weathered rusty-yellow shale with 2 in. thick stringers of crowded, friable, weathered fossils... 4 ft. b. Green glauconite marl, highly fossiliferous, containing the crabs... 1-2 ft. a. Irregular, red-brown, limonitic fossiliferous limestone making a prominent hard bench at the bottom of the creek. The Moseley limestone of Renick and Stenzel (12, p. 91-92)... 6 in.

Size class: macrofossils

Preservation: concretion

Collection methods: Other fossils were collected in the Crockett, but only crustaceans are presented here.

Primary reference: H. B. Stenzel. 1934. Decapod Crustaceans from the Middle Eocene of Texas. Journal of Paleontology 8(1):38-56 [L. Ivany/C. Visaggi/C. Visaggi]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 43111: authorized by Linda Ivany, entered by Christy Visaggi on 10.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Malacostraca
 Decapoda - Zanthopsidae
Harpactocarcinus sp., Harpactocarcinus americanus
Harpactocarcinus sp. Milne-Edwards 1862 crab
Harpactocarcinus americanus Rathbun 1928 crab