Ragley Lumber #D1 well - 14747ft: 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
1 specimen
Pistillipollenites mcgregorii microspore
1 specimen
Spinaepollis spinosus microspore
2-9 category
Kyandopollenites anneratus microspore
2 specimens
Nudopollis terminalis microspore
2-9 category
Thompsonipollis magnificus microspore
17 specimens
Cyathedites spp. microspore
7 specimens
Sterisporites buchenauensis microspore
2 specimens
Sterisporites bujargensis microspore
2 specimens
Porocolpopollenites spp. microspore
1 specimen
Quadrapollenites informal sp. 1 microspore
1 specimen
Algae - Zygnemataceae
Ovoidites spp. microspore
2-9 category
Lycopodiopsida - Lycopodiales - Lycopodiaceae
Lycopodiumsporites spp. microspore
2-9 category
unclassified
Divisisporites enormis microspore
1 specimen
Spermatophyta informal Pollen spp. microspore
16 specimens
Magnoliopsida
Favitricolporites baculoferous microspore
1 specimen
Angiospermae - Saxifragales - Cercidiphyllaceae
Cercidiphyllites spp. microspore
1 specimen
Angiospermae - Proteales - Proteaceae
Triporopollenites bituitus microspore
9 specimens
Triporopollenites spp. microspore
33 specimens
Angiospermae - Gunnerales
Tricolpites hians microspore
2-9 category
Angiospermae - Liliaceae
Liliacidites spp. microspore
2-9 category
Angiospermae - Arecaceae
Arecipites spp. microspore
1 specimen
Angiospermae - Fabales - Fabaceae
Margocolporites kruschii microspore
2 specimens
Angiospermae - Fagales - Juglandaceae
Pterocaryapollenites spp. microspore
1 specimen
Momipites informal sp. 1 microspore Wodehouse 1933
1 specimen
Momipites spp. microspore
5 specimens
Caryapollenites informal sp. <29 micrometers microspore PotoniƩ 1960
1 specimen
Angiospermae - Fagales - Betulaceae
Alnipollenites trina microspore
1 specimen
Angiospermae - Malpighiales - Euphorbiaceae
Tricolporopollenites spp. microspore
1 specimen
Angiospermae - Malvales - Bombacaceae
Bombacacidites spp. microspore
2-9 category
Coniferales
Coniferales informal Bisaccate spp. microspore
15 specimens
Coniferales - Cupressaceae
Taxodium spp. microspore
25 specimens
Pinopsida - Pinales - Pinaceae
Pinuspollenites spp. microspore
7 specimens
Piceapollenites spp. microspore
1 specimen
Pteridopsida
Osmundacidites spp. microspore
1 specimen
Leiotriletes spp. microspore
7 specimens
unclassified
Converrucosisporites spp. microspore
2 specimens
Polypodiopsida - Polypodiaceae
Polypodium spp. microspore
2-9 category
Laevigatosporites spp. microspore
20 specimens
Verrucatosporites spp. microspore
3 specimens
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites dorogensis microspore Potonie and Gelletich 1933
6 specimens
Microfoveolatosporites spp. microspore
1 specimen
unclassified
Microreticulatisporites spp. microspore
1 specimen
Chlorophyceae
Pediastrum spp. microspore
1 specimen
unclassified
Tricolpopollenites geranoides microspore
1 specimen
Tricolpopollenites informal sp. <20 micrometers microspore Thomson and Pflug 1953
2-9 category
Tricolpopollenites spp. microspore
2-9 category
Trudopollis 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
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:-14747ft
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:33838
Authorizer:H. Sims Enterer:A. McGowan, J. Cassara
Modifier:A. McGowan Research group:paleobotany
Created:2003-08-07 10:12:58 Last modified:2003-08-07 13:12:58
Access level:the public Released:2003-08-07 10:12:58
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]