Ragley Lumber #D1 well - 13020ft: 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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1 specimen | |||||||||
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Casurinidites informal sp. 1 microspore
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2 specimens | |||||||||
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Ulmipollenites spp. microspore
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1 specimen | |||||||||
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Nudopollis terminalis microspore
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1 specimen | |||||||||
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Thompsonipollis magnificus microspore
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33 specimens | |||||||||
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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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Inapertisporites spp.
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1 specimen | |||||||||
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Monoporisporites spp.
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1 specimen | |||||||||
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Lacrimasporonites basidii
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1 specimen | |||||||||
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Dicellaesporites spp.
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1 specimen | |||||||||
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Algae
- Zygnemataceae
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Ovoidites spp. microspore
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2 specimens | |||||||||
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unclassified
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Divisisporites enormis microspore
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1 specimen | |||||||||
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Spermatophyta informal Pollen spp. microspore
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14 specimens | |||||||||
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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
- 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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Platycaryapollenites platycaryoides microspore
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1 specimen | |||||||||
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Caryapollenites informal prodromus-imparalis type microspore
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1 specimen | |||||||||
| (Nichols and Ott, 1978) | ||||||||||
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Caryapollenites informal sp. <29 micrometers microspore
Potonié 1960
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2 specimens | |||||||||
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Angiospermae
- Proteales
- Proteaceae
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Triporopollenites bituitus microspore
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1 specimen | |||||||||
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Triporopollenites informal sp. 1 microspore
Pflug and Thomson 1953
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6 specimens | |||||||||
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Angiospermae
- Liliaceae
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Liliacidites spp. microspore
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1 specimen | |||||||||
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Angiospermae
- Arecaceae
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Arecipites spp. microspore
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1 specimen | |||||||||
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Coniferales
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Coniferales informal Bisaccate spp. microspore
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9 specimens | |||||||||
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Coniferales
- Cupressaceae
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Taxodium spp. microspore
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17 specimens | |||||||||
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Pinopsida
- Pinales
- Pinaceae
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Pinuspollenites spp. microspore
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3 specimens | |||||||||
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Polypodiopsida
- Polypodiaceae
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Verrucatosporites spp. microspore
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1 specimen | |||||||||
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Laevigatosporites spp. microspore
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27 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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60 specimens | |||||||||
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unclassified
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Microreticulatisporites spp. microspore
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4 specimens | |||||||||
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Pteridopsida
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Deltoidospora spp. microspore
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23 specimens | |||||||||
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Leiotriletes spp. microspore
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14 specimens | |||||||||
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Osmundacidites spp. microspore
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2 specimens | |||||||||
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unclassified
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Converrucosisporites spp. microspore
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1 specimen | |||||||||
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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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5 specimens | |||||||||
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Perotriletes spp. microspore
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1 specimen | |||||||||
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Tricolpopollenites informal sp. <20 micrometers microspore
Thomson and Pflug 1953
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1 specimen | |||||||||
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Tricolpopollenites spp. microspore
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6 specimens | |||||||||
| 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 |
| 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 | ||||
| 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: | 33816 | ||
| Authorizer: | H. Sims | Enterer: | A. McGowan |
| Modifier: | A. McGowan | Research group: | paleobotany |
| Created: | 2003-08-07 09:20:03 | Last modified: | 2003-08-07 12:20:03 |
| Access level: | the public | Released: | 2003-08-07 09:20:03 |
| 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] |