Ragley Lumber #D1 well - 11083ft (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 33764: authorized by Hallie Sims, entered by Alistair McGowan on 07.08.2003, edited by Jason Cassara

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Algae
  - Zygnemataceae
Ovoidites spp. Krutzsch 1959
Divisisporites
  -
Magnoliopsida
  -
Angiospermae
 Proteales - Proteaceae
 Mesangiosperms - Liliaceae
Liliacidites spp. Couper 1953
 Fabales - Fabaceae
 Fagales - Fagaceae
 Fagales - Juglandaceae
Momipites spp. Wodehouse 1933
Caryapollenites prodromus-imparalis type Potonié 1960
(Nichols and Ott, 1978)
 Fagales - Betulaceae
Alnipollenites verus Potonie 1931 birch
 Malvales - Bombacaceae
Bombacacidites spp. Couper 1960
 Coniferales -
 Coniferales - Cupressaceae
Taxodium spp. Richard 1810 cypress
Pteridopsida
  -
Osmundacidites spp. Couper 1953
Deltoidospora spp. Miner 1935
Leiotriletes spp. Potonie and Kremp 1954
Converrucosisporites
  -
Converrucosisporites spp. Potonié and Kremp 1954
Polypodiopsida
  - Polypodiaceae
 Schizaeales - Polypodiidae
Cicatricosisporites dorogensis Potonie and Gelletich 1933
  - Gleicheniaceae
Gleicheniidites spp. Dettmann 1963
Microreticulatisporites
  -
Microreticulatisporites spp. Potonié and Kremp 1954
Chlorophyceae
  -
Pediastrum spp. Meyen 1829
Dicellaesporites
  -
Inapertisporites
  -
Monoporisporites
  -
Quercoidites
  -
Quercoidites spp. Potonié 1960
Perotriletes
  -
Perotriletes spp. Reyre 1966