Also known as M 87
Where: Sabine 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. "Logansport" was noted as a preoccupied name by Palmer and Brann (1965), who instead used the name "Halls Summit". 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, concretionary, gray, calcareous claystone
Size class: macrofossils
Preservation: concretion
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 52191: authorized by Austin Hendy, entered by Austin Hendy on 30.07.2005, edited by Laurie Eccles
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
| |
Turritella aldrichi turret shell | |
Calyptraphorus aldrichi snail | |
"Levifusus pagoda" = Levifusus pagodiformis
"Levifusus pagoda" = Levifusus pagodiformis Heilprin 1881 snail | |
Orthosurcula longipersa ribbed mitre | |
Athleta petrosa Conrad 1833 volute | |
Polinices harrisii moon snail | |
Bivalvia | |
Pinna gardnerae oyster | |
| |
Martesia sp. Sowerby 1824 clam | |
Corbula sp. Bruguière 1789 clam | |
Tellina cf. estellensis tellin clam | |
Venericardia sp. Lamarck 1801 clam | |
"Nuculana fiski n. sp." = Nuculana1, "Leda sp." = Nuculana, "Yoldia (cf. Orthoyoldia) kindlei" = Orthoyoldia2
"Leda sp." = Nuculana Link 1807 pointed nut clam | |
Yoldia kindlei clam |