Adair-Cherokee County Line Bed 1 Surface Collection 2 (Carboniferous of the United States)

Where: Cherokee County, Oklahoma (35.8° N, 94.8° W: paleocoordinates 11.9° S, 36.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Pitkin Formation, Chesterian (335.5 - 323.2 Ma)

• The Pitkin formation is the uppermost Chesterian unit preserved in this part of the Ozarks. The Mississippian/Pennsylvanian unconformity cuts into the top of the Pitkin in this region and is overlain by the Morrowan age Sausbee Formation.

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, shelly/skeletal grainstone

• Fossiliferous skeletal grainstone interbedded with barren shales.

Size classes: macrofossils, mesofossils

Collected by N. A. Heim in 2005

Collection methods: surface (float), mechanical, sieve,

• A sample of approximately 1 gallon of weathered sediments were collected and processed through a 1 mm sieve in the lab.

Primary reference: N. A. Heim. 2009. Stability of regional brachiopod diversity structure across the Mississippian/Pennsylvanian boundary. Paleobiology 35(3):393 [N. Heim/N. Heim/N. Heim]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 79868: authorized by Noel Heim, entered by Noel Heim on 25.03.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• Only brachiopods were collected. Individuals were counted using the minimum number of individuals method: articulated + the larger of the number of brachial or pedicle valves.
Show authors, comments, and common names
Rhynchonellata
 Athyridida - Retziidae
Eumetria sp.
 Athyridida - Athyrididae
Cleiothyridina sp., Composita sp.
Cleiothyridina sp. Buckman 1906
Composita sp. Brown 1849
 Spiriferida - Spiriferidae
Anthracospirifer sp.
Strophomenata
 Orthotetida - Orthotetidae
Orthotetes sp.
 Productida - Productellidae
Diaphragmus sp.
Diaphragmus sp. Girty 1910