LGS 23 (Paleocene of the United States)

Where: Natchitoches County, Louisiana (31.7° N, 93.4° W: paleocoordinates 35.2° N, 76.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Marthaville Formation (Wilcox Group), Thanetian (59.2 - 56.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; unlithified, glauconitic, brown, yellow, argillaceous, calcareous sandstone

• Fossils collected from yellowish brown glauconitic calcareous argillaceous sand.

Size classes: macrofossils, mesofossils

Primary reference: J. O. Barry and R. J. LeBlanc. 1942. Lower Eocene Faunal Units of Lousiana. Geological Bulletin of the state of Louisiana Dept. of Conservation (23)1-208 [J. Sessa/L. Eccles/L. Eccles]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 99727: authorized by Jocelyn Sessa, entered by Laurie Eccles on 19.11.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Scleractinia - Columastreidae
Haimesiastraea conferta Vaughan 1900 stony coral
Bivalvia
 Ostreida - Ostreidae
"Ostrea thirsae" = Odontogryphaea thirsae
"Ostrea thirsae" = Odontogryphaea thirsae Gabb 1862 oyster