Ragley Lumber #D1 well - 11412ft: Eocene, Louisiana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Dyadosporonites spp. (Hammen)
1 specimen
Diporisporites spp. Elsik 1968
1 specimen
Lacrimasporonites basidii
1 specimen
Inapertisporites spp. Hammen
1 specimen
Calamuspollenites spp. microspore
2 specimens
Casurinidites pulcher microspore
8 specimens
Tiliaepollenites spp. microspore Potonié 1931
2-9 category
Nudopollis terminalis microspore
2-9 category
Thompsonipollis magnificus microspore
56 specimens
Sterisporites bujargensis microspore
1 specimen
Sterisporites bimammatus microspore
1 specimen
Sterisporites spp. microspore
1 specimen
Sterisporites steroides microspore
1 specimen
Sequoidendron spp. microspore
1 specimen
Pleuricellaesporites spp.
2-9 category
Lycopodiopsida - Lycopodiales - Lycopodiaceae
Lycopodiumsporites spp. microspore Delcourt and Sprumont 1955
2-9 category
Hamulatisporites amplus microspore
1 specimen
Algae - Zygnemataceae
Ovoidites spp. microspore Krutzsch 1959
2 specimens
unclassified
Converrucosisporites spp. microspore Potonié and Kremp 1954
1 specimen
Polypodiopsida - Schizaeales - Schizaeaceae
Cicatricosisporites dorogensis microspore Potonie and Gelletich 1933
35 specimens
Polypodiopsida - Polypodiaceae
Laevigatosporites spp. microspore Ibrahim 1933
16 specimens
Verrucatosporites prosecundus microspore
2-9 category
Polypodiopsida - Gleicheniaceae
Gleicheniidites spp. microspore Dettmann 1963
1 specimen
Pteridopsida
Osmundacidites spp. microspore Couper 1953
1 specimen
Leiotriletes spp. microspore Potonie and Kremp 1954
5 specimens
Deltoidospora spp. microspore Miner 1935
18 specimens
unclassified
Microreticulatisporites spp. microspore Potonié and Kremp 1954
1 specimen
Divisisporites enormis microspore
2 specimens
Magnoliopsida
Favitricolporites baculoferous microspore
2-9 category
Pinopsida - Pinales - Pinaceae
Piceapollenites spp. microspore Potonié
1 specimen
Pinuspollenites spp. microspore Raatz 1938
1 specimen
Coniferales
Coniferales informal Bisaccate sp. 1 microspore
1 specimen
Coniferales informal Bisaccate spp. microspore
1 specimen
Coniferales - Cupressaceae
Taxodium spp. microspore Richard 1810
32 specimens
Angiospermae - Liliaceae
Liliacidites spp. microspore Couper 1953
1 specimen
Angiospermae - Proteales - Proteaceae
Triporopollenites bituitus microspore
12 specimens
Triporopollenites informal sp. 1 microspore
39 specimens
Angiospermae - Gunnerales
Tricolpites hians microspore
2-9 category
Angiospermae - Malvales - Bombacaceae
Bombacacidites spp. microspore Couper 1960
1 specimen
Angiospermae - Fabales - Fabaceae
Margocolporites kruschii microspore
1 specimen
Angiospermae - Fagales - Fagaceae
Cupuliferoipollenites spp. microspore Potonié
1 specimen
Angiospermae - Fagales - Juglandaceae
Momipites spp. microspore Wodehouse 1933
1 specimen
Caryapollenites informal prodromus-imparalis type microspore
35 specimens
(Nichols and Ott, 1978)
Platycaryapollenites platycaryoides microspore
2-9 category
Angiospermae - Fagales - Betulaceae
Alnipollenites verus microspore Potonie 1931
1 specimen
unclassified
Schizosporis spp. microspore Cookson and Dettmann 1959
15 specimens
Chlorophyceae
Pediastrum spp. microspore Meyen 1829
3 specimens
unclassified
Tricolpopollenites informal sp. <20 micrometers microspore
1 specimen
Tricolpopollenites spp. microspore Thomson and Pflug 1953
1 specimen
Quercoidites spp. microspore Potonié 1960
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
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 - 33.9 m.y. ago
Stratigraphy
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:33772
Authorizer:H. Sims Enterer:A. McGowan
Modifier:A. McGowan Research group:paleobotany
Created:2003-08-07 07:38:55 Last modified:2003-08-11 10:05:00
Access level:the public Released:2003-08-07 07:38:55
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]