Where: Slope County, North Dakota (46.3° N, 103.9° W: paleocoordinates 52.6° N, 76.7° W)
• coordinate stated in text
• hand sample-level geographic resolution
When: Fort Union Formation, Maastrichtian (72.1 - 66.0 Ma)
• Sample height relative to Fort Union and Hell Creek formation contact.
Environment/lithology: mire or swamp; coal
Size class: microfossils
Preservation: original sporopollenin
Collection methods: bulk, chemical, hydrochloric, hydroflouric
• Samples were collected in the freshly excavated stratigraphic sections. Visible cracks were avoided when sampling to prevent cross contamination between lithological units. Samples were sent to Global GeoLabs Ltd. in Canada for preparation, where standard processing allowed for reliable quantitative work and comparisons between samples. Slides were analyzed using the microscope at the Palaeobotany Department of the Muséum National d'Histoire Naturelle in Paris.
Primary reference: A. Bercovici, D. Pearson, D. Nichols and J. Wood. 2009. Biostratigraphy of selected K/T boundary sections in southwestern North Dakota, USA: toward a refinement of palynological identification criteria. Cretaceous Research 30:632-658 [P. Jardine/H. Morck]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 234602: authorized by Phillip Jardine, entered by Hannah Morck on 25.04.2024
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Cycadopites | |
Cycadopites spp. Wodehouse 1933 | |
Lycopodiopsida | |
Hamulatisporis amplus clubmoss | |
Retitriletes sp. Pierce 1961 clubmoss | |
Bryopsida | |
Stereisporites spp. Pflug 1953 | |
Algae | |
Tetraporina sp. Naumova 1950
Ovoidites sp. Krutzsch 1959 | |
Angiospermae | |
Arecipites sp. Nichols et al. 1973 palm | |
| |
Tricolpites spp. Couper 1953 | |
Triporopollenites spp. Pflug and Thomson 1953 | |
Cupanieidites inaequalis soapberry | |
Magnoliopsida | |
Rhoipites spp. Wodehouse 1933 | |
Taxodiaceaepollenites spp. Kremp 1958 | |
Pinopsida | |
Pityosporites spp. Seward 1914 | |
Pteridopsida | |
Cyathidites spp. Couper 1953
Deltoidospora sp. Miner 1935 | |
Polypodiopsida | |
Gleicheniidites sp. Dettmann 1963 | |
Equisetopsida | |
Inaperturopollenites spp. Potonié 1966 | |
Retitrescolpites | |
| |
Libopollis jarzenii | |
|