Also known as ca. 18 km NNW Nashville, Briar Mining Site, CertainTeed Mining

Where: Howard County, Arkansas (34.1° N, 93.9° W: paleocoordinates 30.7° N, 53.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Holly Creek Formation (Trinity Group), Albian (113.0 - 100.5 Ma)

• In Arkansas, the Trinity Group consists of the Delight Sand/Pike Gravel, the Dierks Limestone, the Holly Creek Formation (which interfingers with the Ultima Thule Gravel), the De Queen Formation, and the Paluxy Formation (Vanderpool, 1928; Miser & Purdue, 1929; McFarland, 2004).

•The upper part of the Holly Creek Formation, at least, is thought to be Albian in age. This is based on similarity of the oyster assemblage (Ostrea franklini) to that found in the overlying De Queen Formation (Miser & Purdue, 1929), suggesting an Albian age for the upper boundary of the Holly Creek Formation. Also, the presence of the foraminiferan Orbitolina texana in the Ferry Lake Anhydrite, a correlative unit to anhydrite beds of the lower De Queen Formation, and the presence of the ammonite Douvilleiceras sp. within the De Queen Formation units at the CertainTeed mine, support an Albian age (Loucks & Longman, 1982; Pittman, 1984, 1985).

Environment/lithology: coastal; gray mudstone and fine-grained sandstone

Size classes: macrofossils, mesofossils, microfossils

Collected by Jeffrey G. Pittman in 1980

Collection methods: quarrying, mechanical, sieve,

• Larger macrovertebrate remains were excavated by co-author JGP and prepared either in the field or the lab at Lamar University. Undergraduate students at Lamar University, East Texas State University (now Texas A&M Commerce), and the University of Colorado at Denver helped with field collecting, processing, and sorting. Additional preparation was completed at the University of Arkansas and the Perot Museum of Nature and Science.

•Sediment was screen-washed and microvertebrates remains were picked at Lamar University and separated into vials based on taxonomic identification

Primary reference: J. G. Pittman and D. D. Gillette. 1989. The Briar site: a new sauropod dinosaur tracksite in Lower Cretaceous beds of Arkansas, USA. In D. D. Gillette and M. G. Lockley (eds.), Dinosaur Tracks and Traces. Cambridge University Press, Cambridge 313-332 [M. Carrano/K. Maguire/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 222851: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 27.10.2021, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)