Where: Allen County, Louisiana (30.0° N, 92.0° W: paleocoordinates 31.6° N, 81.0° W)
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
Size class: microfossils
Preservation: original carbon, original cellulose
Collection methods: surface (in situ), 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 33823: 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 | |
Microreticulatisporites | |
Microreticulatisporites spp. Potonié and Kremp 1954 | |
Triplanosporites | |
Triplanosporites spp. Pflug 1953 | |
Polypodiopsida | |
Laevigatosporites spp. Ibrahim 1933
Verrucatosporites spp. Pflug and Thomson 1953 | |
Cicatricosisporites dorogensis Potonie and Gelletich 1933 | |
Pteridopsida | |
Leiotriletes spp. Potonie and Kremp 1954
Deltoidospora spp. Miner 1935
Osmundacidites spp. Couper 1953 | |
unclassified | |
Angiospermae | |
Proteacidites spp. Cookson and Couper 1953
Triporopollenites "sp. 1" Pflug and Thomson 1953
Triporopollenites spp. Pflug and Thomson 1953 | |
Cupuliferoipollenites spp. Potonié | |
Caryapollenites "sp. <29 micrometers" Potonié 1960
Caryapollenites spp. Potonié 1960 | |
Alnipollenites verus Potonie 1931 birch | |
Tricolporopollenites spp. Thomson and Pflug 1953 spurge | |
Bombacacidites spp. Couper 1960 | |
Pinopsida | |
Pinuspollenites spp. Raatz 1938 | |
Taxodium spp. Richard 1810 cypress | |
Podocarpus spp. L'Heritier and Persoon 1807 podocarp | |
Cedripites | |
Cedripites spp. Woodhouse 1933 | |
unclassified | |
Lycopodiopsida | |
Lycopodiumsporites spp. Delcourt and Sprumont 1955 clubmoss
Hamulatisporites amplus clubmoss | |
Chlorophyceae | |
Pediastrum spp. Meyen 1829 | |
Schizosporis | |
Schizosporis spp. Cookson and Dettmann 1959 | |
Monoporisporites | |
Monoporisporites spp. Hammen | |
Diporisporites | |
| |
Inapertisporites | |
Inapertisporites spp. Hammen | |
Dicellaesporites | |
Dicellaesporites spp. Elsik | |
Tricolpopollenites | |
Tricolpopollenites spp. Thomson and Pflug 1953 |