Ragley Lumber #D1 well - 11528ft: Eocene, Louisiana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
1 specimen
1 specimen
7 specimens
1 specimen
2-9 category
1 specimen
2-9 category
9 specimens
1 specimen
1 specimen
Algae - Zygnemataceae
Ovoidites spp. microspore Krutzsch 1959
1 specimen
Pinopsida - Pinales - Pinaceae
Pinuspollenites spp. microspore Raatz 1938
2 specimens
Coniferales
1 specimen
11 specimens
Coniferales - Cupressaceae
Taxodium spp. microspore Richard 1810
12 specimens
Angiospermae - Malvales - Bombacaceae
Bombacacidites spp. microspore Couper 1960
1 specimen
Angiospermae - Fabales - Fabaceae
1 specimen
Angiospermae - Fagales - Juglandaceae
Pterocaryapollenites spp. microspore Thiergart
1 specimen
Momipites spp. microspore Wodehouse 1933
1 specimen
5 specimens
(Nichols and Ott, 1978)
Angiospermae - Fagales - Fagaceae
Cupuliferoipollenites spp. microspore Potonié
1 specimen
Angiospermae - Malpighiales - Euphorbiaceae
Tricolporopollenites spp. microspore Thomson and Pflug 1953
3 specimens
Angiospermae - Liliaceae
Liliacidites spp. microspore Couper 1953
4 specimens
Angiospermae - Proteales - Proteaceae
4 specimens
15 specimens
Angiospermae - Gunnerales
Tricolpites hians microspore
2-9 category
Angiospermae
1 specimen
Questionable ID
Magnoliopsida
2-9 category
unclassified
Microreticulatisporites spp. microspore Potonié and Kremp 1954
1 specimen
Converrucosisporites spp. microspore Potonié and Kremp 1954
1 specimen
Pteridopsida
Deltoidospora spp. microspore Miner 1935
9 specimens
Osmundacidites spp. microspore Couper 1953
1 specimen
Leiotriletes spp. microspore Potonie and Kremp 1954
2 specimens
Polypodiopsida - Polypodiaceae
Laevigatosporites spp. microspore Ibrahim 1933
8 specimens
1 specimen
2-9 category
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites dorogensis microspore Potonie and Gelletich 1933
24 specimens
Polypodiopsida - Gleicheniaceae
Gleicheniidites spp. microspore Dettmann 1963
2-9 category
unclassified
2 specimens
Ginkgoopsida - Ephedrales
1 specimen
Ephedripites spp. microspore Bolkhovitina and Potonié 1958
1 specimen
unclassified
Cedripites spp. microspore Woodhouse 1933
1 specimen
Chlorophyceae
Pediastrum spp. microspore Meyen 1829
4 specimens
unclassified
Schizosporis spp. microspore Cookson and Dettmann 1959
7 specimens
1 specimen
Tricolpopollenites spp. microspore Thomson and Pflug 1953
1 specimen
Quercoidites spp. microspore Potonié 1960
1 specimen
see common names

Geography
Country:United States State/province:Louisiana County:Allen
Coordinates: 30.0° North, 92.0° West (view map)
Paleocoordinates:34.5° North, 72.7° West (Wright 2013)
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 - 33.9 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:2025-02-22 15:12:02
Access level:the public Released:2003-08-07 07:42:52
Creative Commons license:CC0
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]