Where: Natchitoches County, Louisiana (31.7° N, 93.4° W)
• Paleocoordinates: 37.3° N, 66.3° W (Wright 2013)
• 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; lithified, glauconitic, silty, calcareous claystone
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 99729: authorized by Jocelyn Sessa, entered by Laurie Eccles on 19.11.2010
Creative Commons license: CC0 (CC0)
Taxonomic list
Gastropoda | |
Natica aperta moon snail | |
Tritonidea pachecoi true whelk
Pseudoliva vetusta Conrad 1833 true whelk | |
Bivalvia | |
"Ostrea thirsae" = Odontogryphaea thirsae
"Ostrea thirsae" = Odontogryphaea thirsae Gabb 1862 oyster |