List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Bivalvia
- Cardiida
- Tellinidae
|
|||||||
|
Tellina estellensis
|
Barry and LeBlanc 1942 | ||||||
|
Gastropoda
- Turritellidae
|
|||||||
|
Turritella informal sp. A
Lamarck 1799
|
|||||||
|
Turritella informal sp. B
Lamarck 1799
|
|||||||
|
Turritella informal sp. L
Lamarck 1799
|
Palmer and Brann 1965 | ||||||
|
Gastropoda
- Naticidae
|
|||||||
|
Polinices harrisii
|
|||||||
|
Gastropoda
- Neogastropoda
- Costellariidae
|
|||||||
|
Orthosurcula longipersa
|
|||||||
|
Gastropoda
- Neogastropoda
- Volutidae
|
|||||||
|
Athleta petrosa
(Conrad 1833)
|
|||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Louisiana | County: | DeSoto |
| Coordinates: | 31.6° North, 93.6° West (view map) | ||||
| Paleocoordinates: | 35.5° North, 75.2° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Altitude: | 280 feet | ||||
| Geographic resolution: | outcrop |
Stratigraphy
| Geological group: | Midway | Formation: | Logansport | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 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. | |||||
Lithology and environment
| Primary lithology: | concretionary lithified calcareous siltstone |
| Includes fossils? | Y |
| Lithology description: Fossils occur in calcareous siltstone concretions. | |
| Environment: | offshore |
| Geology comments: No paleoenvironmental data stated. Appears to be a shallow shelfal environment. Enterer has designated it as "offshore siliciclastic". | |
Taphonomy
| Modes of preservation: | body,concretion |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: Collected by LaBlanc and Barry (1939). | |
| Taxonomic list comments:Antiquated nomenclature. Reviewed by LaBlanc (1942), and some names are validated by Toulmin (1977). | |
Metadata
| Also known as: | M 76 | ||
| Database number: | 52198 | ||
| Authorizer: | A. Hendy, J. Sessa | Enterer: | A. Hendy, L. Eccles |
| Modifier: | L. Eccles | Research group: | GCP,marine invertebrate |
| Created: | 2005-07-30 17:27:33 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | group members | Released: | 2010-07-30 17:27:33 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 14033. | 1% 21600 | 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] |
Secondary references:
| 35012 | 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] | |
| 11845 | K. V. Palmer and D. C. Brann. 1965. Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Peteropoda, Scaphopoda and Cephalopoda. Bulletins of American Paleontology 48:1-471 [M. Kosnik/M. Kosnik/J. Alroy] | |
| 11846 | K. V. Palmer and D. C. Brann. 1966. Catalogue of the Paleocene and Eocene Mollusks of the Southern and Eastern United States Part II. Gastropoda. Bulletins of American Paleontology 48:471-1057 [M. Kosnik/M. Kosnik/J. Sessa] |