Biostratigraphically significant palynofloras from the Paleocene–Eocene boundary of the USA

[1 ]Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA

[2 ]School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Parkville, VIC, Australia

[3 ]Petrostrat Ltd., Tan-Y-Graig, Parc Caer Seion, Conwy, UK

[4 ]Department of Geology and Geophysics, Louisiana State University, Baton Rouge, LA, USA

[5 ]Institute of Geology, Leibniz University Hannover, Hannover, Germany

[6 ]Institute of Geology and Palaeontology, University of Münster, Münster, Germany

[7 ]US Geological Survey, Florence Bascom Geoscience Center, Reston, VA, USA