Ragley Lumber #D1 well - 12472ft (Eocene of the United States)

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

• Paleocoordinates: 34.5° N, 72.7° W (Wright 2013)

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 siltstone

• ...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 33793: authorized by Hallie Sims, entered by Alistair McGowan on 07.08.2003, edited by Jason Cassara

Creative Commons license: CC0 (CC0)

Taxonomic list

unclassified
  -
Schizosporis
  -
Schizosporis spp. Cookson and Dettmann 1959
Chlorophyceae
  -
Pediastrum spp. Meyen 1829
Divisisporites
  -
 Coniferales -
 Coniferales - Cupressaceae
Taxodium spp. Richard 1810 cypress
 Coniferales - Podocarpaceae
Podocarpus spp. L'Heritier and Persoon 1807 podocarp
Pinopsida
 Pinales - Pinaceae
Angiospermae
 Proteales - Proteaceae
 Gunnerales -
 Mesangiosperms - Liliaceae
Liliacidites spp. Couper 1953
 Fabales - Fabaceae
 Fagales - Juglandaceae
 Fagales - Fagaceae
unclassified
  -
Lycopodiopsida
 Lycopodiales - Lycopodiaceae
Hamulatisporites spp. Nakoman 1966 clubmoss
Pteridopsida
  -
Deltoidospora spp. Miner 1935
Leiotriletes spp. Potonie and Kremp 1954
Osmundacidites spp. Couper 1953
Polypodiopsida
 Schizaeales - Polypodiidae
Cicatricosisporites dorogensis Potonie and Gelletich 1933
  - Gleicheniaceae
Gleicheniidites spp. Dettmann 1963
  - Polypodiaceae
Verrucatosporites spp. Pflug and Thomson 1953
Microreticulatisporites
  -
Microreticulatisporites spp. Potonié and Kremp 1954
Converrucosisporites
  -
Converrucosisporites spp. Potonié and Kremp 1954
Diporicellaesporites
  -
Dicellaesporites
  -
Inapertisporites
  -
Monoporisporites
  -
Fusiformisporites
  -
Tricolpopollenites
  -