Ragley Lumber #D1 well - 12855ft: Eocene, Louisiana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Casurinidites pulcher microspore
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6 specimens | |||||||||
Thompsonipollis magnificus microspore
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66 specimens | |||||||||
Sterisporites bujargensis microspore
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2 specimens | |||||||||
Pleuricellaesporites spp.
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1 specimen | |||||||||
Tracheophyta informal Trilete spore spp. microspore
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1 specimen | |||||||||
Algae
- Zygnemataceae
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Ovoidites spp. microspore
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2 specimens | |||||||||
unclassified
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Converrucosisporites spp. microspore
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1 specimen | |||||||||
Pteridopsida
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Leiotriletes spp. microspore
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7 specimens | |||||||||
Deltoidospora spp. microspore
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15 specimens | |||||||||
Osmundacidites spp. microspore
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1 specimen | |||||||||
Polypodiopsida
- Gleicheniaceae
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Gleicheniidites spp. microspore
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4 specimens | |||||||||
Polypodiopsida
- Schizaeales
- Schizaeaceae
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Cicatricosisporites dorogensis microspore
Potonie and Gelletich 1933
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25 specimens | |||||||||
Polypodiopsida
- Polypodiaceae
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Laevigatosporites spp. microspore
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29 specimens | |||||||||
Polypodium spp. microspore
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1 specimen | |||||||||
Verrucatosporites spp. microspore
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1 specimen | |||||||||
unclassified
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Spermatophyta informal Pollen spp. microspore
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20 specimens | |||||||||
Angiospermae
- Malvales
- Bombacaceae
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Bombacacidites spp. microspore
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1 specimen | |||||||||
Angiospermae
- Malpighiales
- Euphorbiaceae
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Tricolporopollenites spp. microspore
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1 specimen | |||||||||
Angiospermae
- Fabales
- Fabaceae
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Margocolporites kruschii microspore
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1 specimen | |||||||||
Angiospermae
- Fagales
- Juglandaceae
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Caryapollenites informal prodromus-imparalis type microspore
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19 specimens | |||||||||
(Nichols and Ott, 1978) | ||||||||||
Momipites informal sp. 2 microspore
Wodehouse 1933
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1 specimen | |||||||||
Momipites spp. microspore
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1 specimen | |||||||||
Angiospermae
- Proteales
- Proteaceae
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Triporopollenites bituitus microspore
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6 specimens | |||||||||
Triporopollenites informal sp. 1 microspore
Pflug and Thomson 1953
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16 specimens | |||||||||
Triporopollenites spp. microspore
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22 specimens | |||||||||
Angiospermae
- Arecaceae
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Arecipites spp. microspore
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1 specimen | |||||||||
Angiospermae
- Liliaceae
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Liliacidites spp. microspore
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1 specimen | |||||||||
Coniferales
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Coniferales informal Bisaccate spp. microspore
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11 specimens | |||||||||
Coniferales
- Cupressaceae
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Taxodium spp. microspore
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13 specimens | |||||||||
Pinopsida
- Pinales
- Pinaceae
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Pinuspollenites spp. microspore
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1 specimen | |||||||||
Magnoliopsida
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Basopollis obscurocostatus microspore
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1 specimen | |||||||||
Chlorophyceae
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Pediastrum spp. microspore
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7 specimens | |||||||||
unclassified
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Schizosporis spp. microspore
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7 specimens | |||||||||
Inapertisporites spp.
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1 specimen | |||||||||
Monoporisporites spp.
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1 specimen | |||||||||
Tricolpopollenites spp. microspore
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1 specimen | |||||||||
see common names |
Geography
Country: | United States | State/province: | Louisiana | County: | Allen |
Coordinates: | 30.0° North, 92.0° West (view map) | ||||
Paleocoordinates: | 31.6° North, 81.0° West |
Time
Period: | Paleogene | Epoch: | Eocene |
Key time interval: | Eocene | ||
Age range of interval: | 56.00000 - 33.90000 m.y. ago |
Stratigraphy
Geological group: | Wilcox | ||||
Local section: | Ragley Lumber Well #D1 | Local bed: | -12855ft | ||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: Horizon sample from drill core. Gregory and Hart (1995a, pollen and spores) do not recognize the Clairbornian in the core, but in Gregory and Hart (1995, dinoflagellates), they do. Both papers look at the same samples from the same core and derive different age assignments because they treat each independently. RAL elected to enter a uniform age assignment for both papers. |
Lithology and environment
Primary lithology: | siltstone | ||
Secondary lithology: | "shale" | ||
Lithology description: 50 siltstone and shale samples used in the study by Gregory (1991) | |||
Environment: | deltaic indet. | Tectonic setting: | passive margin |
Glacial or sequence phase: | regressive | ||
Geology comments: ...due to a decrease in sediment supply in late Sabian, the style of deltaic sedimentation changed from fluvial-dominated to wave-dominated, shelf-edge deltas (Lowery 1987) |
Taphonomy
Modes of preservation: | original chitin,original sporopollenin |
Size of fossils: | microfossils |
Collection methods and comments
Collection methods: | surface (in situ),chemical,field collection |
Reason for describing collection: | paleoecologic analysis |
Metadata
Database number: | 33804 | ||
Authorizer: | H. Sims | Enterer: | A. McGowan |
Modifier: | A. McGowan | Research group: | paleobotany |
Created: | 2003-08-07 08:42:46 | Last modified: | 2003-08-07 11:42:46 |
Access level: | the public | Released: | 2003-08-07 08:42:46 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
4067. | W. A. Gregory and G. F. Hart. 1995. Distribution of pollen and spores in a subsurface marine Wilcox (Paleocene-Eocene) section in southwest Louisiana. Palynology 19:1-43 [R. Lupia/R. Vaughn] |