Ragley Lumber #D1 well - 14251ft (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: 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)
• 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.

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 33828: authorized by Hallie Sims, entered by Alistair McGowan on 07.08.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Microreticulatisporites
  -
Microreticulatisporites spp. Potonié and Kremp 1954
Polypodiopsida
  - Gleicheniaceae
Gleicheniidites spp. Dettmann 1963
  - Polypodiaceae
Verrucatosporites spp. Pflug and Thomson 1953
 Schizaeales - Polypodiidae
Cicatricosisporites dorogensis Potonie and Gelletich 1933
Converrucosisporites
  -
Converrucosisporites spp. Potonié and Kremp 1954
Lycopodiopsida
 Lycopodiales - Lycopodiaceae
Hamulatisporites spp. Nakoman 1966 clubmoss
Lycopodiumsporites spp. Delcourt and Sprumont 1955 clubmoss
Algae
  - Zygnemataceae
Ovoidites spp. Krutzsch 1959
unclassified
  -
Angiospermae
 Saxifragales - Cercidiphyllaceae
Cercidiphyllites spp. Mtchedlishvili 1961
 Proteales - Proteaceae
Triporopollenites "sp. 1" Pflug and Thomson 1953
Triporopollenites spp. Pflug and Thomson 1953
 Mesangiosperms - Arecaceae
Arecipites spp. Nichols et al. 1973 palm
 Mesangiosperms - Liliaceae
Liliacidites spp. Couper 1953
 Fabales - Fabaceae
 Fagales - Juglandaceae
 Fagales - Fagaceae
Pinopsida
 Pinales - Pinaceae
 Coniferales -
 Coniferales - Cupressaceae
Taxodium spp. Richard 1810 cypress
 Coniferales - Podocarpaceae
Podocarpus spp. L'Heritier and Persoon 1807 podocarp
Divisisporites
  -
Divisisporites spp. Thomson 1952
Chlorophyceae
  -
Pediastrum spp. Meyen 1829
Schizosporis
  -
Schizosporis spp. Cookson and Dettmann 1959
Monoporisporites
  -
Lacrimasporonites
  -
Dicellaesporites
  -
Inapertisporites
  -
Tricolpopollenites
  -
Tricolpopollenites spp. Thomson and Pflug 1953