| Pollen terminology. An illustrated handbook R Grant-Downton Annals of Botany 105 (2), viii-ix, 2009 | 1042 | 2009 |
| Illustrated pollen terminology H Halbritter, S Ulrich, F Grímsson, M Weber, R Zetter, M Hesse, ... Springer, 2018 | 499 | 2018 |
| Episodic migration of oaks to Iceland: Evidence for a North Atlantic “land bridge” in the latest Miocene T Denk, F Grímsson, R Zetter American Journal of Botany 97 (2), 276-287, 2010 | 147 | 2010 |
| Methodik und Bedeutung einer routinemaBig kombinierten lichtmikroskopischen und rasterelektronmikroskopischen Untersuchung Fossiler Mikrofloren R Zetter Courier Forschungsinstitut Senckenberg 109, 41-50, 1989 | 126 | 1989 |
| Late Cainozoic floras of Iceland: 15 million years of vegetation and climate history in the northern North Atlantic T Denk, F Grimsson, R Zetter, LA Símonarson Springer Science & Business Media, 2011 | 115 | 2011 |
| The need for the SEM in palaeopalynology DK Ferguson, R Zetter, KN Paudayal Comptes Rendus Palevol 6 (6-7), 423-430, 2007 | 91 | 2007 |
| Fagaceae from the early Oligocene of Central Europe: persisting new world and emerging old world biogeographic links T Denk, F Grímsson, R Zetter Review of Palaeobotany and Palynology 169, 7-20, 2012 | 87 | 2012 |
| Discriminating fossil evergreen and deciduous Quercus pollen: a case study from the Miocene of eastern China R Zetter, DK Ferguson, BAR Mohr Review of Palaeobotany and Palynology 145 (3-4), 289-303, 2007 | 85 | 2007 |
| Leaf architecture and epidermal characters in Zelkova, Ulmaceae YF Wang, DK Ferguson, R Zetter, T Denk, G Garfi Botanical Journal of the Linnean Society 136 (3), 255-265, 2001 | 77 | 2001 |
| Assessing the fossil record of asterids in the context of our current phylogenetic framework SR Manchester, F Grímsson, R Zetter Annals of the Missouri Botanical Garden. Missouri Botanical Garden 100 (4), 329, 2015 | 76 | 2015 |
| Fagaceae pollen from the early Cenozoic of West Greenland: revisiting Engler’s and Chaney’s Arcto-Tertiary hypotheses F Grímsson, R Zetter, GW Grimm, GK Pedersen, AK Pedersen, T Denk Plant Systematics and Evolution 301 (2), 809-832, 2015 | 74 | 2015 |
| Advances in our knowledge of the Miocene plant assemblage from Kreuzau, Germany DK Ferguson, M Pingen, R Zetter, CC Hofmann Review of Palaeobotany and Palynology 101 (1-4), 147-177, 1998 | 62 | 1998 |
| Cretaceous and Paleogene Fagaceae from North America and Greenland: evidence for a Late Cretaceous split between Fagus and the remaining Fagaceae F Grímsson, GW Grimm, R Zetter, T Denk Acta Palaeobotanica 56 (2), 247-305, 2016 | 58 | 2016 |
| The fossil pollen record of Araceae M Hesse, R Zetter Plant Systematics and Evolution 263, 93-115, 2007 | 58 | 2007 |
| Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part II. Pinophyta (Cupressaceae, Pinaceae and Sciadopityaceae) F Grímsson, R Zetter Grana 50 (4), 262-310, 2011 | 55 | 2011 |
| Pollen, fruits, and leaves of Tetracentron (Trochodendraceae) from the Cainozoic of Iceland and western North America and their palaeobiogeographic implications F Grímsson, T Denk, R Zetter Grana 47 (1), 1-14, 2008 | 55 | 2008 |
| Lower Miocene leaf, palynomorph, and diaspore assemblages from the base of the lignite-bearing sequence in the opencast mine Oberdorf, N Voitsberg (Styria, Austria) as an … B Meller, J Kovar-Eder, R Zetter Palaeontographica Abteilung B 252 (5-6), 123-179, 1999 | 54 | 1999 |
| Die Primatenfundstelle Götzendorf an der Leitha (Obermiozän des Wiener Beckens, Niederösterreich) F Rögl, H Zapfe, RL Bernor, RL Brzobohaty, G Daxner-Höck, I Draxler, ... Jahrbuch der Geologischen Bundesanstalt 136 (2), 503-526, 1993 | 53 | 1993 |
| Combined LM and SEM study of the middle Miocene (Sarmatian) palynoflora from the Lavanttal Basin, Austria: part IV. Magnoliophyta 2–Fagales to Rosales FĐ Grímsson, GW Grimm, B Meller, JM Bouchal, R Zetter Grana 55 (2), 101-163, 2016 | 52* | 2016 |
| A multidisciplinary approach to reconstruct the Late Oligocene vegetation in central Europe RA Gastaldo, W Riegel, W Püttmann, UG Linnemann, R Zetter Review of Palaeobotany and Palynology 101 (1-4), 71-94, 1998 | 52 | 1998 |
Friðgeir GrímssonDr. phil. habil.Verified email at fridgeirgrimsson.com
