Also known as M 81
Where: Natchitoches County, Louisiana (31.6° N, 93.6° W: paleocoordinates 35.5° N, 75.2° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Logansport Formation (Midway Group), Danian to Danian (66.0 - 56.0 Ma)
• JAS has updated the age of this collection.
•Some confusion about the age of collections from this reference. While text states them to be Eocene, the Wilcox Group is in fact late Paleocene. No finer lithostratigraphic designation is stated in text, but Toulmin (1977) reports many of LeBlanc's taxa as belonging to the Logansport Formation of Sabine Parish, Louisiana. Logansport Formation lies betweent the Naborton and Hall Summit Formations, all of Thanetian age, and underlies further the Ypresian (Earliest Eocene) Marthaville, Pendleton and Sabinetown Formations.
• bed-level stratigraphic resolution
Environment/lithology: offshore; lithified, brown, yellow, sandy siltstone
Size classes: macrofossils, mesofossils
Collection methods: Collected by LaBlanc and Barry (1939).
Primary reference: R. J. LeBlanc and J.O. Barry. 1941. Fossiliferous localities of Midway Group in Louisiana. Bulletin of the American Association of Petroleum Geologists 25(4):734-738 [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 52197: authorized by Austin Hendy, entered by Austin Hendy on 30.07.2005, edited by Laurie Eccles
Creative Commons license: CC BY (attribution)