Natchitoches, LA; Bed A, bag #1: Lutetian, Louisiana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Scaphopoda
- Gadilida
- Gadilidae
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Cadulus sp.
Philippi 1844
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3 individuals | |||||||||
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Gastropoda
- Naticidae
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Naticidae indet.
Guilding 1834
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9 individuals | |||||||||
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Gastropoda
- Neogastropoda
- Olivellidae
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Agaronia sp.
(Gray 1839)
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6 individuals | |||||||||
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Gastropoda
- Neogastropoda
- Melongenidae
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Levifusus sp.
Conrad 1865
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2 individuals | |||||||||
| n. sp.? | ||||||||||
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Levifusus mortoniopsis
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1 individual | |||||||||
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Gastropoda
- Neogastropoda
- Turridae
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Protosurcula gabbi
Conrad 1865
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1 individual | |||||||||
| corrected as Protosurcula gabbii | ||||||||||
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Coronia genitiva
Casey 1904
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1 individual | |||||||||
| recombined as Gemmula (Coronia) genitiva | ||||||||||
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Gastropoda
- Heterostropha
- Architectonicidae
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Architectonica amoena
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1 individual | |||||||||
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Gastropoda
- Heterostropha
- Ringiculidae
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Ringicula trapaquara
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12 individuals | |||||||||
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Gastropoda
- Opisthobranchia
- Retusidae
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Retusa galba
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1 individual | |||||||||
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Gymnolaemata
- Cheilostomata
- Lepraliellidae
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Holoporella granulosa
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2 individuals | |||||||||
| synonym of Celleporaria | ||||||||||
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Gymnolaemata
- Cheilostomata
- Lunulitidae
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Lunulitidae indet.
Lagaaij 1952
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14 individuals | |||||||||
| lunulitid A | ||||||||||
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Anthozoa
- Scleractinia
- Turbinoliidae
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Turbinolia pharetra
Lea 1833
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7 individuals | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Louisiana | County: | Natchitoches |
| Coordinates: | 31.8° North, 93.1° West (view map) | ||||
| Paleocoordinates: | 33.5° North, 81.9° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Lutetian | 10 m.y. bin: | Cenozoic 2 |
| *Period: | Tertiary | *Local age/stage: | Claibornian |
| Key time interval: | Lutetian | Zone: | late |
| Age range of interval: | 47.80000 - 41.20000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Weches |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | glauconitic unlithified marl | ||
| Environment: | offshore | Tectonic setting: | passive margin |
| Geology comments: highly glauconitic gray-green marl tiny fragile fossils some minor pyrite | |||
Taphonomy
| Modes of preservation: | body,cast,original aragonite,original calcite |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | bulk,mechanical,sieve,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:includes all countable macrofossils except bivalves (at this time), but oysters ARE included | |
Metadata
| Also known as: | LNa-1a | ||
| Database number: | 2409 | ||
| Authorizer: | L. Ivany | Enterer: | L. Ivany |
| Modifier: | J. Sessa | Research group: | GCP,marine invertebrate |
| Created: | 1999-07-03 13:36:38 | Last modified: | 2010-08-05 11:22:25 |
| Access level: | the public | Released: | 1999-07-03 13:36:38 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 72. | L. C. Ivany. 1997. Faunal stability and environmental change in the middle Eocene Gulf Coastal Plain (PhD Thesis, Harvard University). 1-221 [L. Ivany/L. Ivany/A. Clement] |