Ragley Lumber #D1 well - 14359ft: Eocene, Louisiana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Calamuspollenites spp. microspore
1 specimen
Casurinidites pulcher microspore
20 specimens
Pistillipollenites mcgregorii microspore
1 specimen
Spinaepollis spinosus microspore
2-9 category
Nudopollis terminalis microspore
1 specimen
Thompsonipollis magnificus microspore
22 specimens
Cyathedites spp. microspore
19 specimens
Sterisporites buchenauensis microspore
1 specimen
Sterisporites bujargensis microspore
3 specimens
Sterisporites spp. microspore
1 specimen
Sterisporites steroides microspore
1 specimen
Pesavis tagulensis
1 specimen
Pleuricellaesporites spp.
1 specimen
Lycopodiopsida - Lycopodiales - Lycopodiaceae
Hamulatisporites spp. microspore
15 specimens
Lycopodiumsporites spp. microspore
1 specimen
Algae - Zygnemataceae
Ovoidites spp. microspore
2-9 category
unclassified
Converrucosisporites spp. microspore
2-9 category
Microreticulatisporites spp. microspore
1 specimen
Triplanosporites spp. microspore
1 specimen
Pteridopsida
Osmundacidites spp. microspore
2-9 category
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites dorogensis microspore Potonie and Gelletich 1933
14 specimens
Polypodiopsida - Polypodiaceae
Laevigatosporites spp. microspore
20 specimens
Verrucatosporites spp. microspore
1 specimen
unclassified
Divisisporites spp. microspore
2-9 category
Spermatophyta informal Pollen spp. microspore
14 specimens
Angiospermae - Malvales - Bombacaceae
Bombacacidites spp. microspore
1 specimen
Angiospermae - Malpighiales - Euphorbiaceae
Tricolporopollenites spp. microspore
2 specimens
Angiospermae - Fabales - Fabaceae
Margocolporites kruschii microspore
2 specimens
Angiospermae - Fagales - Juglandaceae
Caryapollenites informal sp. <29 micrometers microspore PotoniƩ 1960
1 specimen
Caryapollenites spp. microspore
3 specimens
Momipites spp. microspore
1 specimen
Angiospermae - Proteales - Proteaceae
Triporopollenites bituitus microspore
11 specimens
Triporopollenites spp. microspore
20 specimens
Angiospermae - Arecaceae
Arecipites spp. microspore
1 specimen
Angiospermae - Liliaceae
Liliacidites spp. microspore
1 specimen
Coniferales
Coniferales informal Bisaccate spp. microspore
23 specimens
Coniferales - Cupressaceae
Taxodium spp. microspore
18 specimens
Pinopsida - Pinales - Pinaceae
Pinuspollenites spp. microspore
9 specimens
Piceapollenites spp. microspore
2-9 category
Magnoliopsida
Favitricolporites baculoferous microspore
1 specimen
Basopollis obscurocostatus microspore
1 specimen
Chlorophyceae
Pediastrum spp. microspore
4 specimens
unclassified
Schizosporis spp. microspore
1 specimen
Monoporisporites spp.
1 specimen
Tricolpopollenites spp. microspore
2 specimens
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
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:33829
Authorizer:H. Sims Enterer:A. McGowan, J. Cassara
Modifier:J. Cassara Research group:paleobotany
Created:2003-08-07 09:49:14 Last modified:2004-02-21 17:59:26
Access level:the public Released:2003-08-07 09:49:14
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]