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
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 | |
Gleicheniidites spp. Dettmann 1963 | |
Laevigatosporites spp. Ibrahim 1933
Verrucatosporites spp. Pflug and Thomson 1953 | |
Cicatricosisporites dorogensis Potonie and Gelletich 1933
Undulatisporites spp. Pflug 1953 | |
Converrucosisporites | |
Converrucosisporites spp. Potonié and Kremp 1954 | |
Lycopodiopsida | |
Hamulatisporites spp. Nakoman 1966 clubmoss
Lycopodiumsporites spp. Delcourt and Sprumont 1955 clubmoss | |
Algae | |
Ovoidites spp. Krutzsch 1959 | |
unclassified | |
Angiospermae | |
Cercidiphyllites spp. Mtchedlishvili 1961 | |
Triporopollenites "sp. 1" Pflug and Thomson 1953
Triporopollenites spp. Pflug and Thomson 1953 | |
Arecipites spp. Nichols et al. 1973 palm | |
Liliacidites spp. Couper 1953 | |
Margocolporites kruschii legume | |
Caryapollenites "sp. <29 micrometers" Potonié 1960
Momipites spp. Wodehouse 1933 | |
Cupuliferoipollenites spp. Potonié | |
Pinopsida | |
Pinuspollenites spp. Raatz 1938 | |
Taxodium spp. Richard 1810 cypress | |
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 | |
Monoporisporites spp. Hammen | |
Lacrimasporonites | |
Dicellaesporites | |
Dicellaesporites spp. Elsik | |
Inapertisporites | |
Inapertisporites spp. Hammen | |
Tricolpopollenites | |
Tricolpopollenites spp. Thomson and Pflug 1953 |