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 33772: authorized by Hallie Sims, entered by Alistair McGowan on 07.08.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Schizosporis | |
Schizosporis spp. Cookson and Dettmann 1959 | |
Chlorophyceae | |
Pediastrum spp. Meyen 1829 | |
Divisisporites | |
Magnoliopsida | |
Pinopsida | |
Piceapollenites spp. Potonié
Pinuspollenites spp. Raatz 1938 | |
Taxodium spp. Richard 1810 cypress | |
Angiospermae | |
Liliacidites spp. Couper 1953 | |
Triporopollenites "sp. 1" Pflug and Thomson 1953 | |
Bombacacidites spp. Couper 1960 | |
Alnipollenites verus Potonie 1931 birch | |
Cupuliferoipollenites spp. Potonié | |
Momipites spp. Wodehouse 1933 | |
Margocolporites kruschii legume | |
Pteridopsida | |
Leiotriletes spp. Potonie and Kremp 1954
Osmundacidites spp. Couper 1953
Deltoidospora spp. Miner 1935 | |
Converrucosisporites | |
Converrucosisporites spp. Potonié and Kremp 1954 | |
Polypodiopsida | |
Cicatricosisporites dorogensis Potonie and Gelletich 1933 | |
Laevigatosporites spp. Ibrahim 1933 | |
Gleicheniidites spp. Dettmann 1963 | |
Microreticulatisporites | |
Microreticulatisporites spp. Potonié and Kremp 1954 | |
Lycopodiopsida | |
Hamulatisporites amplus clubmoss
Lycopodiumsporites spp. Delcourt and Sprumont 1955 clubmoss | |
Algae | |
Ovoidites spp. Krutzsch 1959 | |
Lacrimasporonites | |
Dyadosporonites | |
Dyadosporonites spp. Hammen | |
Inapertisporites | |
Inapertisporites spp. Hammen | |
Diporisporites | |
Diporisporites spp. Elsik 1968 | |
Tricolpopollenites | |
Tricolpopollenites "sp. <20 micrometers" Thomson and Pflug 1953
Tricolpopollenites spp. Thomson and Pflug 1953 | |
Quercoidites | |
Quercoidites spp. Potonié 1960 |