Boltons Ferry, Tombigbee River, Demopolis (Cretaceous of the United States)

Where: Sumter County, Alabama (32.5° N, 87.8° W: paleocoordinates 35.3° N, 60.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Demopolis Chalk Formation (Selma Group), Middle Campanian (83.5 - 70.6 Ma)

• Only "Selma Chalk" given, but highly likely from Demopolis Chalk.

• group of beds-level stratigraphic resolution

Environment/lithology: poorly lithified chalk

Size class: macrofossils

Reposited in the USNM

Primary reference: G. A. Cooper. 1973. Fossil and recent Cancellothyridacea (Brachiopoda). Tohoku University, Science Reports, 2nd Series (Geology), Special Volume 6:371-390 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 190362: authorized by Matthew Clapham, entered by Matthew Clapham on 05.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Terebratulida - Cancellothyrididae
Cricosia filosa Conrad 1866