Ragley Lumber #D1 well - 12139ft (Eocene of the United States)

Where: Allen County, Louisiana (30.0° N, 92.0° W: paleocoordinates 31.6° N, 81.0° W)

• small collection-level geographic resolution

When: Wilcox Group, Eocene (56.0 - 33.9 Ma)

• 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.

• bed-level stratigraphic resolution

Environment/lithology: deltaic; siltstone and shale

• ...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)
• 50 siltstone and shale samples used in the study by Gregory (1991)

Size class: microfossils

Preservation: original chitin, original sporopollenin

Collection methods: core, chemical,

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 33786: authorized by Hallie Sims, entered by Alistair McGowan on 07.08.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Converrucosisporites
  -
Converrucosisporites spp. Potonié and Kremp 1954
Microreticulatisporites
  -
Microreticulatisporites spp. Potonié and Kremp 1954
Polypodiopsida
  - Polypodiaceae
  - Gleicheniaceae
Gleicheniidites spp. Dettmann 1963
 Schizaeales - Polypodiidae
Cicatricosisporites dorogensis Potonie and Gelletich 1933
Pteridopsida
  -
Leiotriletes spp. Potonie and Kremp 1954
Deltoidospora spp. Miner 1935
Angiospermae
 Mesangiosperms - Arecaceae
Arecipites spp. Nichols et al. 1973 palm
 Mesangiosperms - Liliaceae
Liliacidites spp. Couper 1953
 Gunnerales -
 Proteales - Proteaceae
 Fabales - Fabaceae
 Fagales - Fagaceae
 Fagales - Juglandaceae
 Malvales - Bombacaceae
Bombacacidites spp. Couper 1960
Magnoliopsida
  -
Pinopsida
 Pinales - Pinaceae
 Coniferales -
 Coniferales - Cupressaceae
Taxodium spp. Richard 1810 cypress
 Coniferales - Podocarpaceae
Podocarpus spp. L'Heritier and Persoon 1807 podocarp
Algae
  - Zygnemataceae
Ovoidites spp. Krutzsch 1959
Cedripites
  -
Cedripites spp. Woodhouse 1933
Divisisporites
  -
Lycopodiopsida
 Lycopodiales - Lycopodiaceae
Lycopodiumsporites spp. Delcourt and Sprumont 1955 clubmoss
Chlorophyceae
  -
Pediastrum spp. Meyen 1829
Schizosporis
  -
Schizosporis spp. Cookson and Dettmann 1959
Monoporisporites
  -
Diporisporites
  -
Diporisporites "type 2" Elsik 1968
(Elsik and Dilcher, 1974)
Inapertisporites
  -
Diporicellaesporites
  -
Fusiformisporites
  -
Tricolpopollenites
  -
Tricolpopollenites spp. Thomson and Pflug 1953