LGS 17 (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)

• formation-level stratigraphic resolution

Environment/lithology: marine; unlithified, concretionary, glauconitic, calcareous sandstone

• Fossils from ferruginous concretions and underlying glauconitic calcareous 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 99721: 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
Gastropoda
 Neogastropoda - Melongenidae
Cornulina minax Solander 1766 snail
Bivalvia
 Ostreida - Ostreidae
"Ostrea thirsae" = Odontogryphaea thirsae Gabb 1862 oyster
 Cardiida - Veneridae
Pitaria (Pitaria) nuttalliopsis venus clam
Pitaria (Pitaria) nuttalliopsis greggi
 Carditida - Carditidae
Venericardia (Venericor) densata Conrad 1845 clam
Venericardia (Venericor) densata pendletonensis