List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Pollinices harrisii
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Barry and LeBlanc 1942 | |||||||||
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Gastropoda
- Turritellidae
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Turritella aldrichi
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Turritella informal sp. B
Lamarck 1799
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Turritella gardnerae
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Palmer and Brann 1965 | |||||||||
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Turritella informal sp. L
Lamarck 1799
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Palmer and Brann 1965 | |||||||||
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Gastropoda
- Naticidae
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Polinices harrisii
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Gastropoda
- Neogastropoda
- Costellariidae
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Orthosurcula persa
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| including subspecies "Orthosurcula persa pleasanthillensis" | ||||||||||
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Orthosurcula longipersa
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Orthosurcula aff. adeona
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Gastropoda
- Neogastropoda
- Melongenidae
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Cornulina sp.
Conrad 1853
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Cornulina triseralis
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Palmer and Brann 1965 | |||||||||
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Levifusus sp.
Conrad 1865
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Barry and LeBlanc 1942 | |||||||||
| Levifusus sp. C | ||||||||||
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Levifusus pagoda
(Heilprin 1880)
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| replaced by Levifusus pagodiformis | ||||||||||
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Gastropoda
- Neogastropoda
- Columbellidae
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Mitrella sp.
Risso 1826
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Mitrella alabamensis
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Palmer and Brann 1965 | |||||||||
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Gastropoda
- Neogastropoda
- Volutidae
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Athleta petrosa
(Conrad 1833)
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Gastropoda
- Neogastropoda
- Turridae
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Turris kerenensis
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"Turris" rockscreekensis
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Palmer and Brann 1965 | |||||||||
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Gastropoda
- Rostellariidae
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Calyptraphorus aldrichi
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Calyptraphorus cf. trinodiferus
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Gastropoda
- Lepetellida
- Fissurellidae
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? Fissurella sp.
Bruguière 1789
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Gastropoda
- Opisthobranchia
- Retusidae
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Retusa (Cylichnina) informal sp. B
(Monterasato 1884)
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Palmer and Brann 1965 | |||||||||
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Gastropoda
- Opisthobranchia
- Bullidae
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Bullinella sp.
Newton
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Bivalvia
- Nuculanida
- Nuculanidae
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Nuculana fiski n. sp.
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Barry and LeBlanc 1942 | |||||||||
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Leda sp.
Schumacher 1817
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| synonym of Nuculana | ||||||||||
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Bivalvia
- Nuculanida
- Yoldiidae
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Yoldia kindlei
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Bivalvia
- Pholadida
- Pholadidae
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Martesia sp.
Sowerby 1824
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Bivalvia
- Pholadida
- Corbulidae
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Corbula sp.
Bruguière 1789
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Bivalvia
- Cardiida
- Tellinidae
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Tellina estellensis
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Barry and LeBlanc 1942 | |||||||||
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Bivalvia
- Carditida
- Carditidae
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Venericardia sp.
Lamarck 1801
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Venericardia (Venericor) gardnerae n. sp.
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Barry and LeBlanc 1942 | |||||||||
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Bivalvia
- Ostreida
- Pinnidae
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Pinna gardnerae
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Atrina gardnerae
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Palmer and Brann 1965 | |||||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea informal sp. H
Linnaeus 1758
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Palmer and Brann 1965 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Louisiana | County: | Natchitoches |
| Coordinates: | 31.6° North, 93.6° West (view map) | ||||
| Paleocoordinates: | 35.5° North, 75.2° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Altitude: | 190 feet | ||||
| Geographic resolution: | outcrop |
Stratigraphy
| Geological group: | Midway | Formation: | Logansport | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 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. | |||||
Lithology and environment
| Primary lithology: | brown,yellow lithified sandy siltstone |
| Includes fossils? | Y |
| Lithology description: Yellowish brown sandy siltstone overlain by 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 |
| 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 81 | ||
| Database number: | 52197 | ||
| Authorizer: | A. Hendy, J. Sessa | Enterer: | A. Hendy, L. Eccles |
| Modifier: | L. Eccles | Research group: | GCP,marine invertebrate |
| Created: | 2005-07-30 17:25:00 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | group members | Released: | 2010-07-30 17:25:00 |
| 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] |