| The Chicxulub asteroid impact and mass extinction at the Cretaceous-Paleogene boundary P Schulte, L Alegret, I Arenillas, JA Arz, PJ Barton, PR Bown, TJ Bralower, ... Science 327 (5970), 1214-1218, 2010 | 1504 | 2010 |
| A revised Paleocene (Teurian) dinoflagellate cyst zonation from eastern New Zealand EM Crouch, PS Willumsen, DK Kulhanek, SJ Gibbs Review of Palaeobotany and Palynology 202, 47-79, 2014 | 55 | 2014 |
| Multiproxy analysis of a new terrestrial and a marine Cretaceous–Paleogene (K–Pg) boundary site from New Zealand E Ferrow, V Vajda, CB Koch, B Peucker-Ehrenbrink, PS Willumsen Geochimica et Cosmochimica Acta 75 (2), 657-672, 2011 | 37 | 2011 |
| Molerområdets geologi–sedimenter, fossiler, askelag og glaicaltektonik GK Pedersen, SAS Pedersen, N Bonde, C Heilmann-Clausen, LM Larsen, ... | 36 | 2011 |
| Palynology of the Lower Eocene deposits of northwest Jutland, Denmark PS Willumsen Bulletin of the Geological Society of Denmark 52, 141-157, 2004 | 34 | 2004 |
| Surface salinity and nutrient variations during the L ittorina S tage in the F årö D eep, B altic S ea PIS Willumsen, HL Filipsson, M Reinholdsson, C Lenz Boreas 42 (1), 210-223, 2013 | 30 | 2013 |
| A new early Paleocene dinoflagellate cyst species, Trithyrodinium partridgei: its biostratigraphic significance and palaeoecology PS Willumsen, V Vajda Alcheringa: An Australasian Journal of Palaeontology 34 (4), 523-538, 2010 | 30 | 2010 |
| Maastrichtian to Paleocene dinocysts from the Clarence Valley, South Island, New Zealand PS Willumsen Alcheringa: An Australasian Journal of Palaeontology 35 (2), 199-240, 2011 | 29 | 2011 |
| Palynodinium minus sp. nov., a new dinoflagellate cyst from the Cretaceous–Paleogene transition in New Zealand; its significance and palaeoecology PS Willumsen Cretaceous Research 27 (6), 954-963, 2006 | 27 | 2006 |
| South Pacific evidence for the long-term climate impact of the Cretaceous/Paleogene boundary event KWR Taylor, PS Willumsen, CJ Hollis, RD Pancost Earth-Science Reviews 179, 287-302, 2018 | 26 | 2018 |
| Late Cretaceous to early Paleocene palynological changes in midlatitude Southern Hemisphere, New Zealand PS Willumsen GFF 122 (1), 180-181, 2000 | 26 | 2000 |
| Two new species of the dinoflagellate cyst genus Carpatella Grigorovich, 1969 from the Cretaceous–Tertiary transition in New Zealand PS Willumsen Journal of Micropalaeontology 23 (2), 119-125, 2004 | 25 | 2004 |
| Palynostratigraphy and palaeoenvironmental shifts in Oligocene and Miocene strata from offshore Angola, west-central Africa PS Willumsen, B Dale, DW Jolley, GV Laursen Palynology 38 (2), 259-279, 2014 | 20 | 2014 |
| Marine Palynology Across the Cretaceous-Tertiary Boundary in New Zealand: A Thesis Submitted to the Victoria University of Wellington in Fulfilment of the Requirements for the … PS Willumsen Victoria University of Wellington, 2003 | 20 | 2003 |
| Three new species of dinoflagellate cyst from Cretaceous–Paleogene (K-Pg) boundary sections at mid-Waipara River and Fairfield Quarry, South Island, New Zealand PS Willumsen Palynology 36 (sup1), 48-62, 2012 | 15 | 2012 |
| Response—Cretaceous extinctions P Schulte, L Alegret, I Arenillas, JA Arz, PJ Barton, PR Bown, TJ Bralower, ... Science 328 (5981), 975-976, 2010 | 9 | 2010 |
| New Zealand Late Maastrichtian to Early Paleocene dinoflagellate cyst biostratigraphy P Willumsen, G Wilson, C Hollis, S Poul, H Michael, F Brad, P Strong Polen 14, 121-122, 2004 | 8 | 2004 |
| Maastrichtian to early Eocene dinoflagellate cysts of Nigeria, West Africa P Willumsen, H Antolinez, C Jaramillo, F Oboh-Ikuenobe Polen 14, 414-415, 2004 | 8 | 2004 |
| Honing the test-and-treat HIV strategy TD Mastro, MS Cohen Science 328 (5981), 976-976, 2010 | 6 | 2010 |
| Palynofacies and paleoenvironmental changes across the Cretaceous-Tertiary boundary in New Zealand P Willumsen, C Hollis, S Poul, H Michael, W Graeme, F Brad, P Strong Polen 14, 197-198, 2004 | 5 | 2004 |
