Ragley Lumber #D1 well - 13255ft: Eocene, Louisiana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Calamuspollenites spp. microspore
2-9 category
Casurinidites pulcher microspore
1 specimen
Tiliaepollenites spp. microspore
2-9 category
Nudopollis terminalis microspore
1 specimen
Thompsonipollis magnificus microspore
55 specimens
Sterisporites bujargensis microspore
1 specimen
Sterisporites steroides microspore
1 specimen
Pleuricellaesporites spp.
1 specimen
Inapertisporites spp.
1 specimen
Monoporisporites spp.
1 specimen
Diporicellaesporites spp.
1 specimen
Multicellaesporites spp.
1 specimen
Fusiformisporites crabbii
1 specimen
Diporisporites spp.
1 specimen
Chlorophyceae
Pediastrum spp. microspore
32 specimens
unclassified
Schizosporis paleocenicus microspore
3 specimens
Pteridopsida
Leiotriletes spp. microspore
22 specimens
Deltoidospora spp. microspore
39 specimens
Osmundacidites spp. microspore
1 specimen
unclassified
Converrucosisporites spp. microspore
6 specimens
Microreticulatisporites spp. microspore
2-9 category
Polypodiopsida - Gleicheniaceae
Gleicheniidites spp. microspore
1 specimen
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites dorogensis microspore Potonie and Gelletich 1933
10 specimens
Polypodiopsida - Polypodiaceae
Laevigatosporites spp. microspore
27 specimens
Verrucatosporites spp. microspore
1 specimen
Polypodium spp. microspore
2-9 category
unclassified
Spermatophyta informal Pollen spp. microspore
15 specimens
Coniferales
Coniferales informal Bisaccate spp. microspore
14 specimens
Coniferales - Cupressaceae
Taxodium spp. microspore
14 specimens
Coniferales - Podocarpaceae
Podocarpus spp. microspore
1 specimen
Pinopsida - Pinales - Pinaceae
Pinuspollenites spp. microspore
1 specimen
Piceapollenites spp. microspore
13 specimens
Angiospermae - Arecaceae
Arecipites spp. microspore
1 specimen
Angiospermae - Liliaceae
Liliacidites spp. microspore
1 specimen
Angiospermae - Proteales - Proteaceae
Triporopollenites bituitus microspore
7 specimens
Triporopollenites informal sp. 1 microspore Pflug and Thomson 1953
7 specimens
Triporopollenites spp. microspore
10 specimens
Angiospermae - Saxifragales - Cercidiphyllaceae
Cercidiphyllites spp. microspore
1 specimen
Angiospermae - Malpighiales - Euphorbiaceae
Tricolporopollenites spp. microspore
1 specimen
Angiospermae - Fagales - Fagaceae
Cupuliferoipollenites spp. microspore
1 specimen
Angiospermae - Fagales - Juglandaceae
Momipites spp. microspore
1 specimen
Pterocaryapollenites spp. microspore
1 specimen
Caryapollenites informal sp. <29 micrometers microspore Potonié 1960
3 specimens
Caryapollenites spp. microspore
1 specimen
Angiospermae - Fabales - Fabaceae
Margocolporites kruschii microspore
1 specimen
Angiospermae - Malvales - Bombacaceae
Bombacacidites spp. microspore
1 specimen
unclassified
Divisisporites enormis microspore
2-9 category
Algae - Zygnemataceae
Ovoidites spp. microspore
1 specimen
Lycopodiopsida - Lycopodiales - Lycopodiaceae
Lycopodiumsporites spp. microspore
2-9 category
Hamulatisporites amplus microspore
1 specimen
Hamulatisporites spp. microspore
1 specimen
unclassified
Tricolpopollenites spp. microspore
2-9 category
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
Local section:Ragley Lumber Well #D1 Local bed:-13255
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:33818
Authorizer:H. Sims Enterer:A. McGowan, J. Cassara
Modifier:A. McGowan Research group:paleobotany
Created:2003-08-07 09:24:12 Last modified:2003-08-07 12:24:12
Access level:the public Released:2003-08-07 09:24:12
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]