Natchitoches, LA; near top of Bed B, bag #2: Lutetian, Louisiana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gymnolaemata
- Cheilostomata
- Lunulitidae
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Lunulitidae indet.
Lagaaij 1952
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12 individuals | |||||||||
| lunulitid A | ||||||||||
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Gymnolaemata
- Cheilostomata
- Lepraliellidae
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Holoporella granulosa
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3 individuals | |||||||||
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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7 individuals | |||||||||
| Gastropod Y | ||||||||||
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Gastropoda
- Naticidae
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Naticidae indet.
Guilding 1834
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4 individuals | |||||||||
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Gastropoda
- Neogastropoda
- Melongenidae
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Levifusus mortoniopsis
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3 individuals | |||||||||
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Gastropoda
- Heterostropha
- Architectonicidae
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Architectonica meekana
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1 individual | |||||||||
| A. m. splendida | ||||||||||
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Gastropoda
- Heterostropha
- Ringiculidae
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Ringicula trapaquara
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7 individuals | |||||||||
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Gastropoda
- Opisthobranchia
- Retusidae
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Retusa galba
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3 individuals | |||||||||
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Anthozoa
- Scleractinia
- Turbinoliidae
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Turbinolia pharetra
Lea 1833
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3 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: | 47.8 - 41.2 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Weches | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: above bed A | |||||
Lithology and environment
| Primary lithology: | glauconitic unlithified marl |
| Environment: | offshore |
| Geology comments: glauconitic marl, oxidized, pale gray-green fresh most fossils are moldic or rotten aragonite | |
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 macrofossils but bivalves, but oysters ARE included | |
Metadata
| Also known as: | LNa-1b | ||
| Database number: | 2410 | ||
| Authorizer: | L. Ivany | Enterer: | L. Ivany |
| Modifier: | J. Sessa | Research group: | GCP,marine invertebrate |
| Created: | 1999-07-03 13:45:19 | Last modified: | 2010-08-10 11:46:58 |
| Access level: | the public | Released: | 1999-07-03 13:45:19 |
| 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] |