Ragley Lumber #D1 well - 14792ft: Eocene, Louisiana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Calamuspollenites spp. microspore
1 specimen
Casurinidites pulcher microspore
30 specimens
Casurinidites informal sp. 1 microspore
2 specimens
Porocolpopollenites spp. microspore
1 specimen
Spinaepollis spinosus microspore
4 specimens
Tiliaepollenites spp. microspore
1 specimen
Kyandopollenites anneratus microspore
1 specimen
Nudopollis terminalis microspore
1 specimen
Thompsonipollis magnificus microspore
16 specimens
Cyathedites spp. microspore
19 specimens
Sterisporites buchenauensis microspore
1 specimen
Sterisporites bujargensis microspore
2 specimens
Sterisporites bimammatus microspore
1 specimen
Sterisporites spp. microspore
1 specimen
Brachysporites spp.
1 specimen
Pleuricellaesporites spp.
2-9 category
Chlorophyceae
Pediastrum spp. microspore
1 specimen
unclassified
Schizosporis spp. microspore
7 specimens
Lycopodiopsida - Lycopodiales - Lycopodiaceae
Lycopodiumsporites spp. microspore
1 specimen
Hamulatisporites spp. microspore
15 specimens
unclassified
Spermatophyta informal Pollen spp. microspore
21 specimens
Magnoliopsida
Favitricolporites baculoferous microspore
1 specimen
Pinopsida - Pinales - Pinaceae
Piceapollenites spp. microspore
5 specimens
Coniferales
Coniferales informal Bisaccate spp. microspore
16 specimens
Coniferales - Cupressaceae
Taxodium spp. microspore
20 specimens
Angiospermae - Malpighiales - Euphorbiaceae
Tricolporopollenites spp. microspore
1 specimen
Angiospermae - Fagales - Juglandaceae
Caryapollenites informal sp. <29 micrometers microspore Potonié 1960
2 specimens
Caryapollenites spp. microspore
1 specimen
Pterocaryapollenites spp. microspore
1 specimen
Momipites informal sp. 1 microspore Wodehouse 1933
1 specimen
Momipites spp. microspore
2-9 category
Angiospermae - Fabales - Fabaceae
Margocolporites kruschii microspore
2 specimens
Angiospermae - Malvales - Bombacaceae
Bombacacidites spp. microspore
1 specimen
Angiospermae - Proteales - Proteaceae
Triporopollenites bituitus microspore
15 specimens
Triporopollenites informal sp. 1 microspore Pflug and Thomson 1953
2-9 category
Triporopollenites spp. microspore
47 specimens
Angiospermae - Gunnerales
Tricolpites hians microspore
2-9 category
Angiospermae - Arecaceae
Arecipites spp. microspore
2 specimens
Angiospermae - Liliaceae
Liliacidites spp. microspore
2-9 category
unclassified
Converrucosisporites spp. microspore
2 specimens
Pteridopsida
Deltoidospora spp. microspore
1 specimen
unclassified
Microreticulatisporites spp. microspore
1 specimen
Polypodiopsida - Polypodiaceae
Polypodium spp. microspore
1 specimen
Laevigatosporites spp. microspore
27 specimens
Polypodiopsida - Gleicheniaceae
Gleicheniidites spp. microspore
1 specimen
Polypodiopsida - Schizaeales - Schizaeaceae
Microfoveolatosporites spp. microspore
2-9 category
Cicatricosisporites dorogensis microspore Potonie and Gelletich 1933
15 specimens
Algae - Zygnemataceae
Ovoidites spp. microspore
2-9 category
unclassified
Fusiformisporites crabbii
1 specimen
Lacrimasporonites basidii
1 specimen
Monoporisporites spp.
1 specimen
Inapertisporites spp.
1 specimen
Dicellaesporites spp.
1 specimen
Involutisporonites spp.
1 specimen
Tricolpopollenites informal sp. <20 micrometers microspore Thomson and Pflug 1953
1 specimen
Tricolpopollenites spp. microspore
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:-14792ft
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
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:33839
Authorizer:H. Sims Enterer:A. McGowan, J. Cassara
Modifier:A. McGowan Research group:paleobotany
Created:2003-08-07 10:16:48 Last modified:2003-08-07 13:16:48
Access level:the public Released:2003-08-07 10:16:48
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]