Ragley Lumber #D1 well - 11528ft: Eocene, Louisiana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Calamuspollenites spp. microspore
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1 specimen | |||||||||
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Casurinidites pulcher microspore
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7 specimens | |||||||||
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Porocolpopollenites spp. microspore
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1 specimen | |||||||||
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Spinaepollis spinosus microspore
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2-9 category | |||||||||
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Ulmipollenites spp. microspore
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1 specimen | |||||||||
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Nudopollis terminalis microspore
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2-9 category | |||||||||
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Thompsonipollis magnificus microspore
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9 specimens | |||||||||
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Sterisporites bimammatus microspore
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1 specimen | |||||||||
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Sequoidendron spp. microspore
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1 specimen | |||||||||
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Ginkgoopsida
- Ephedrales
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Ephedripites voluta microspore
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1 specimen | |||||||||
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Ephedripites spp. microspore
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1 specimen | |||||||||
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unclassified
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Divisisporites enormis microspore
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2 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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Cedripites spp. microspore
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1 specimen | |||||||||
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Pteridopsida
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Leiotriletes spp. microspore
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2 specimens | |||||||||
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Deltoidospora spp. microspore
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9 specimens | |||||||||
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Osmundacidites spp. microspore
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1 specimen | |||||||||
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unclassified
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Converrucosisporites spp. microspore
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1 specimen | |||||||||
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Microreticulatisporites spp. microspore
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1 specimen | |||||||||
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Polypodiopsida
- Schizaeales
- Schizaeaceae
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Cicatricosisporites dorogensis microspore
Potonie and Gelletich 1933
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24 specimens | |||||||||
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Polypodiopsida
- Polypodiaceae
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Polypodium spp. microspore
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2-9 category | |||||||||
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Verrucatosporites prosecundus microspore
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1 specimen | |||||||||
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Laevigatosporites spp. microspore
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8 specimens | |||||||||
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Polypodiopsida
- Gleicheniaceae
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Gleicheniidites spp. microspore
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2-9 category | |||||||||
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Magnoliopsida
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Favitricolporites baculoferous microspore
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2-9 category | |||||||||
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Angiospermae
- Malpighiales
- Euphorbiaceae
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Tricolporopollenites spp. microspore
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3 specimens | |||||||||
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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
- Fagales
- Juglandaceae
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Pterocaryapollenites spp. microspore
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1 specimen | |||||||||
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Caryapollenites informal prodromus-imparalis type microspore
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5 specimens | |||||||||
| (Nichols and Ott, 1978) | ||||||||||
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Momipites spp. microspore
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1 specimen | |||||||||
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Angiospermae
- Fagales
- Fagaceae
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Cupuliferoipollenites spp. 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
- Gunnerales
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Tricolpites hians microspore
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2-9 category | |||||||||
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Angiospermae
- Proteales
- Proteaceae
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Triporopollenites bituitus microspore
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4 specimens | |||||||||
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Triporopollenites informal sp. 1 microspore
Pflug and Thomson 1953
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15 specimens | |||||||||
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Angiospermae
- Liliaceae
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Liliacidites spp. microspore
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4 specimens | |||||||||
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Coniferales
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Coniferales informal Bisaccate sp. 1 microspore
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1 specimen | |||||||||
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Coniferales informal Bisaccate spp. microspore
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11 specimens | |||||||||
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Coniferales
- Cupressaceae
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Taxodium spp. microspore
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12 specimens | |||||||||
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Pinopsida
- Pinales
- Pinaceae
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Pinuspollenites spp. microspore
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2 specimens | |||||||||
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Chlorophyceae
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Pediastrum spp. microspore
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4 specimens | |||||||||
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unclassified
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Schizosporis spp. microspore
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7 specimens | |||||||||
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Monoporisporites spp.
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1 specimen | |||||||||
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Quercoidites spp. microspore
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1 specimen | |||||||||
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Trudopollis spp. microspore
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1 specimen | |||||||||
| Questionable ID | ||||||||||
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Tricolpopollenites geranoides microspore
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1 specimen | |||||||||
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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 | ||||
| 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: | -11528ft | ||
| 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: | 33773 | ||
| Authorizer: | H. Sims | Enterer: | A. McGowan |
| Modifier: | A. McGowan | Research group: | paleobotany |
| Created: | 2003-08-07 07:42:52 | Last modified: | 2003-08-22 09:02:09 |
| Access level: | the public | Released: | 2003-08-07 07:42:52 |
| 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] |