Ragley Lumber #D1 well - 12855ft: Eocene, Louisiana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Casurinidites pulcher microspore
6 specimens
Thompsonipollis magnificus microspore
66 specimens
Sterisporites bujargensis microspore
2 specimens
Pleuricellaesporites spp.
1 specimen
Tracheophyta informal Trilete spore spp. microspore
1 specimen
Algae - Zygnemataceae
Ovoidites spp. microspore
2 specimens
unclassified
Converrucosisporites spp. microspore
1 specimen
Pteridopsida
Leiotriletes spp. microspore
7 specimens
Deltoidospora spp. microspore
15 specimens
Osmundacidites spp. microspore
1 specimen
Polypodiopsida - Gleicheniaceae
Gleicheniidites spp. microspore
4 specimens
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites dorogensis microspore Potonie and Gelletich 1933
25 specimens
Polypodiopsida - Polypodiaceae
Laevigatosporites spp. microspore
29 specimens
Polypodium spp. microspore
1 specimen
Verrucatosporites spp. microspore
1 specimen
unclassified
Spermatophyta informal Pollen spp. microspore
20 specimens
Angiospermae - Malvales - Bombacaceae
Bombacacidites spp. microspore
1 specimen
Angiospermae - Malpighiales - Euphorbiaceae
Tricolporopollenites spp. microspore
1 specimen
Angiospermae - Fabales - Fabaceae
Margocolporites kruschii microspore
1 specimen
Angiospermae - Fagales - Juglandaceae
Caryapollenites informal prodromus-imparalis type microspore
19 specimens
(Nichols and Ott, 1978)
Momipites informal sp. 2 microspore Wodehouse 1933
1 specimen
Momipites spp. microspore
1 specimen
Angiospermae - Proteales - Proteaceae
Triporopollenites bituitus microspore
6 specimens
Triporopollenites informal sp. 1 microspore Pflug and Thomson 1953
16 specimens
Triporopollenites spp. microspore
22 specimens
Angiospermae - Arecaceae
Arecipites spp. microspore
1 specimen
Angiospermae - Liliaceae
Liliacidites spp. microspore
1 specimen
Coniferales
Coniferales informal Bisaccate spp. microspore
11 specimens
Coniferales - Cupressaceae
Taxodium spp. microspore
13 specimens
Pinopsida - Pinales - Pinaceae
Pinuspollenites spp. microspore
1 specimen
Magnoliopsida
Basopollis obscurocostatus microspore
1 specimen
Chlorophyceae
Pediastrum spp. microspore
7 specimens
unclassified
Schizosporis spp. microspore
7 specimens
Inapertisporites spp.
1 specimen
Monoporisporites spp.
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
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:-12855ft
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:surface (in situ),chemical,field collection
Reason for describing collection:paleoecologic analysis
Metadata
Database number:33804
Authorizer:H. Sims Enterer:A. McGowan
Modifier:A. McGowan Research group:paleobotany
Created:2003-08-07 08:42:46 Last modified:2003-08-07 11:42:46
Access level:the public Released:2003-08-07 08:42:46
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]