Ragley Lumber #D1 well - 11083ft: Eocene, Louisiana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Casurinidites pulcher microspore
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9 specimens | |||||||||
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Nudopollis terminalis microspore
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1 specimen | |||||||||
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Sterisporites bujargensis microspore
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1 specimen | |||||||||
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Sterisporites bimammatus microspore
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1 specimen | |||||||||
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Sterisporites spp. microspore
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1 specimen | |||||||||
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Pleuricellaesporites spp.
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3 specimens | |||||||||
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Thompsonipollis magnificus microspore
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80 specimens | |||||||||
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Chlorophyceae
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Pediastrum spp. microspore
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2 specimens | |||||||||
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Magnoliopsida
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Favitricolporites baculoferous microspore
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2 specimens | |||||||||
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Coniferales
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Coniferales informal Bisaccate spp. microspore
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4 specimens | |||||||||
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Coniferales
- Cupressaceae
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Taxodium spp. microspore
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15 specimens | |||||||||
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Angiospermae
- Fagales
- Betulaceae
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Alnipollenites verus microspore
Potonie 1931
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1 specimen | |||||||||
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Angiospermae
- Fagales
- Fagaceae
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Cupuliferoipollenites spp. microspore
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3 specimens | |||||||||
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Angiospermae
- Fagales
- Juglandaceae
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Caryapollenites prodromus-imparalis type microspore
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22 specimens | |||||||||
| (Nichols and Ott, 1978) | ||||||||||
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Momipites spp. microspore
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1 specimen | |||||||||
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Angiospermae
- Fabales
- Fabaceae
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Margocolporites kruschii microspore
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1 specimen | |||||||||
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Angiospermae
- Malvales
- Bombacaceae
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Bombacacidites spp. microspore
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1 specimen | |||||||||
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Angiospermae
- Proteales
- Proteaceae
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Triporopollenites bituitus microspore
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5 specimens | |||||||||
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Triporopollenites informal sp. 1 microspore
Pflug and Thomson 1953
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38 specimens | |||||||||
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Angiospermae
- Liliaceae
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Liliacidites spp. microspore
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1 specimen | |||||||||
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unclassified
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Converrucosisporites spp. microspore
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2 specimens | |||||||||
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Pteridopsida
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Leiotriletes spp. microspore
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13 specimens | |||||||||
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Deltoidospora spp. microspore
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24 specimens | |||||||||
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Osmundacidites spp. microspore
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6 specimens | |||||||||
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unclassified
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Microreticulatisporites spp. microspore
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2 specimens | |||||||||
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Polypodiopsida
- Polypodiaceae
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Laevigatosporites spp. microspore
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16 specimens | |||||||||
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Polypodiopsida
- Gleicheniaceae
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Gleicheniidites spp. microspore
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3 specimens | |||||||||
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Polypodiopsida
- Schizaeales
- Schizaeaceae
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Cicatricosisporites dorogensis microspore
Potonie and Gelletich 1933
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12 specimens | |||||||||
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Algae
- Zygnemataceae
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Ovoidites spp. microspore
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1 specimen | |||||||||
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unclassified
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Divisisporites enormis microspore
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3 specimens | |||||||||
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Monoporisporites spp.
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2 specimens | |||||||||
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Inapertisporites spp.
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4 specimens | |||||||||
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Dicellaesporites spp.
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1 specimen | |||||||||
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Quercoidites spp. microspore
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2 specimens | |||||||||
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Perotriletes 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 | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Eocene |
| 10 m.y. bin: | Cenozoic 2-3 | ||
| 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: | -11083 | ||
| 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: | core,chemical,field collection |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 33764 | ||
| Authorizer: | H. Sims | Enterer: | A. McGowan, J. Cassara |
| Modifier: | J. Alroy | Research group: | paleobotany |
| Created: | 2003-08-07 07:18:13 | Last modified: | 2004-03-10 11:51:57 |
| Access level: | the public | Released: | 2003-08-07 07:18:13 |
| 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] |