Ragley Lumber #D1 well - 12687ft: Eocene, Louisiana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
1 specimen
Casurinidites sp. microspore
1 specimen
1 specimen
68 specimens
1 specimen
1 specimen
1 specimen
1 specimen
1 specimen
Algae - Zygnemataceae
Ovoidites spp. microspore Krutzsch 1959
2-9 category
Lycopodiopsida - Lycopodiales - Lycopodiaceae
Lycopodiumsporites spp. microspore Delcourt and Sprumont 1955
2-9 category
1 specimen
unclassified
20 specimens
Angiospermae - Arecaceae
Arecipites spp. microspore Nichols et al. 1973
1 specimen
Angiospermae - Proteales - Proteaceae
2-9 category
22 specimens
Angiospermae - Gunnerales
Tricolpites hians microspore
1 specimen
Angiospermae - Fabales - Fabaceae
1 specimen
Angiospermae - Fagales - Juglandaceae
Pterocaryapollenites spp. microspore Thiergart
1 specimen
1 specimen
(Nichols and Ott, 1978)
1 specimen
Angiospermae - Malpighiales - Euphorbiaceae
Tricolporopollenites spp. microspore Thomson and Pflug 1953
1 specimen
Pinopsida - Pinales - Pinaceae
Pinuspollenites spp. microspore Raatz 1938
4 specimens
Coniferales
11 specimens
Coniferales - Cupressaceae
Taxodium spp. microspore Richard 1810
23 specimens
unclassified
Converrucosisporites spp. microspore Potonié and Kremp 1954
2-9 category
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites dorogensis microspore Potonie and Gelletich 1933
36 specimens
Polypodiopsida - Polypodiaceae
Verrucatosporites spp. microspore Pflug and Thomson 1953
1 specimen
Laevigatosporites spp. microspore Ibrahim 1933
25 specimens
1 specimen
Polypodiopsida - Gleicheniaceae
Gleicheniidites spp. microspore Dettmann 1963
1 specimen
unclassified
Microreticulatisporites spp. microspore Potonié and Kremp 1954
2 specimens
Pteridopsida
Osmundacidites spp. microspore Couper 1953
2 specimens
Deltoidospora spp. microspore Miner 1935
21 specimens
Leiotriletes spp. microspore Potonie and Kremp 1954
11 specimens
unclassified
1 specimen
1 specimen
Schizosporis spp. microspore Cookson and Dettmann 1959
9 specimens
Chlorophyceae
Pediastrum spp. microspore Meyen 1829
2 specimens
unclassified
Tricolpopollenites spp. microspore Thomson and Pflug 1953
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)
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:-12687ft
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:33798
Authorizer:H. Sims Enterer:A. McGowan, J. Cassara
Modifier:A. McGowan Research group:paleobotany
Created:2003-08-07 08:33:27 Last modified:2025-02-22 15:12:02
Access level:the public Released:2003-08-07 08:33:27
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]