GTw-2 (Moodys Branch) (Eocene of the United States)

Where: Twiggs County, Georgia (32.7° N, 83.6° W: paleocoordinates 33.0° N, 74.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Clinchfield Sand Member (Moodys Branch Formation), Bartonian (41.3 - 38.0 Ma)

• supposedly "Auversian"; stage assignment based on Baum et al. 1994; Section GTw-2

•Moodys Branch=Bartonian (JAS 14 October 2010)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; unlithified sandstone

Size class: mesofossils

Primary reference: L. D. Toulmin. 1977. Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region. Geological Survey of Alabama, Monograph 13 1:1-602 [M. Patzkowsky/K. Layou/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3528: authorized by Mark Patzkowsky, entered by Karen Layou on 04.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida - Pectinoidae
Chlamys nupera Conrad 1854 scallop
 Ostreida - Ostreidae
"Crassostrea gigantissima" = Striostrea gigantissima
"Crassostrea gigantissima" = Striostrea gigantissima Finch 1824 oyster
 Nuculida - Nuculidae
Nucula sp. Lamarck 1799 nut clam
Echinoidea
 Spatangoida - Schizasteridae
"Schizaster armiger" = Paraster armiger
"Schizaster armiger" = Paraster armiger Clark and Twitchell 1915 heart urchin
 Clypeasteroida - Protoscutellidae
Periarchus lyelli Conrad 1834 sand dollar