Where: New Madrid County, Missouri (36.4° N, 89.6° W: paleocoordinates 37.7° N, 77.6° W)
• coordinate estimated from map
• hand sample-level geographic resolution
When: Cook Mountain Formation, Eocene (56.0 - 33.9 Ma)
• The sidewall core seems clearly to be from the upper part of the middle Eocene because Celtis and Gothanipollis are fairly abundant in this sample.
Environment/lithology: marine; argillaceous, sandy siltstone
Size class: microfossils
Preservation: original sporopollenin
Reposited in the USGS
Collection methods: core, chemical, hydrochloric, hydroflouric,
Primary reference: N. O. Frederiksen, L. M. Bybell, R. A. Christopher, A. J. Crone, L. E. Edwards, T. G. Gibson, J. E. Hazel, J. E. Repetski, D. P. Russ, C. C. Smith, and L.W. Ward. 1982. Biostratigraphy and paleoecology of lower Paleozoic, upper Cretaceous, and lower Tertiary rocks in U.S. Geological Survey New Madrid test wells, Southeastern Missouri. Tulane Studies in Geology and Paleontology 17(2):23-45 [P. Jardine/H. Morck]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 231934: authorized by Phillip Jardine, entered by Hannah Morck on 04.10.2023
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Polyatriapollenites vermontensis, Pseudolaesapollis ventosa, Ulmipollenites undulosus, Cyrillaceaepollenites kedvesii, Alangiopollis spp., "Eucommia type" sp.
| |
Lycopodiopsida | |
Lycopodium hamulatum ground pine | |
Polypodiopsida | |
Gleicheniidites senonicus Ross 1949 | |
Magnoliopsida | |
Angiospermae | |
Platanus occidentaloides plane tree | |
Gothanipollis cockfieldensis mistletoe | |
Graminidites gramineoides bamboo | |
Cupuliferoipollenites spp. PotoniƩ | |
Platycarya platycaryoides Roche 1969
Carya "large grains" Nuttall 1818 hickory
Momipites microfoveolatus Stanley 1965
Momipites coryloides Wodehouse 1933 | |
Betula sp. Linnaeus 1753 birch
Alnus vera alder | |
Celtis sp. Linnaeus 1753 hackberry | |
Verrutricolporites | |
Verrutricolporites spp. Van der Hammen and Wijmstra 1964 | |
Tetracolporopollenites | |
Tetracolporopollenites megadolium Frederiksen 1980 | |
Quercoidites | |