| Paleobotany and the evolution of plants WN Stewart, GW Rothwell Cambridge University Press, 1993 | 1755 | 1993 |
| Lignophyte phylogeny and the evolution of spermatophytes: a numerical cladistic analysis GW Rothwell, R Serbet Systematic Botany, 443-482, 1994 | 299 | 1994 |
| Fossil ectomycorrhizae from the Middle Eocene BA Lepage, RS Currah, RA Stockey, GW Rothwell American journal of botany 84 (3), 410-412, 1997 | 209 | 1997 |
| Fossils and ferns in the resolution of land plant phylogeny GW Rothwell The Botanical Review 65, 188-218, 1999 | 200 | 1999 |
| Stelar morphology and the primary vascular system of seed plants CB Beck, R Schmid, GW Rothwell The Botanical Review 48, 691-815, 1982 | 186 | 1982 |
| New interpretations of the earliest conifers GW Rothwell Review of Palaeobotany and Palynology 37 (1-2), 7-28, 1982 | 150 | 1982 |
| Elkinsia gen. nov., a Late Devonian gymnosperm with cupulate ovules GW Rothwell, SE Scheckler, WH Gillespie Botanical Gazette 150 (2), 170-189, 1989 | 145 | 1989 |
| The fossil monocot Limnobiophyllum scutatum: resolving the phylogeny of Lemnaceae RA Stockey, GL Hoffman, GW Rothwell American Journal of Botany 84 (3), 355-368, 1997 | 137 | 1997 |
| How does the inclusion of fossil data change our conclusions about the phylogenetic history of euphyllophytes? GW Rothwell, KC Nixon International Journal of Plant Sciences 167 (3), 737-749, 2006 | 135 | 2006 |
| Chaloneria gen. nov.; heterosporous lycophytes from the Pennsylvanian of North America KB Pigg, GW Rothwell Botanical Gazette 144 (1), 132-147, 1983 | 127 | 1983 |
| Biology of ancestral gymnosperms GW Rothwell, SE Scheckler | 124 | 1988 |
| Is the anthophyte hypothesis alive and well? New evidence from the reproductive structures of Bennettitales GW Rothwell, WL Crepet, RA Stockey American Journal of Botany 96 (1), 296-322, 2009 | 122 | 2009 |
| Hanskerpia gen. nov. and phylogenetic relationships among the most ancient conifers (Voltziales) GW Rothwell, G Mapes, GR Hernandez-Castillo Taxon 54 (3), 733-750, 2005 | 121 | 2005 |
| The earliest seeds WH Gillespie, GW Rothwell, SE Scheckler Nature 293 (5832), 462-464, 1981 | 114 | 1981 |
| The Callistophytales (pteridospermopsida): reproductively sophisticated Paleozoic gymnosperms GW Rothwell Review of Palaeobotany and Palynology 32 (1), 103-121, 1981 | 114 | 1981 |
| Thucydiaceae fam. nov., with a review and reevaluation of Paleozoic walchian conifers GR Hernandez-Castillo, GW Rothwell, G Mapes International Journal of Plant Sciences 162 (5), 1155-1185, 2001 | 110 | 2001 |
| Characterizing the most primitive seed ferns. I. A reconstruction of Elkinsia polymorpha R Serbet, GW Rothwell International Journal of Plant Sciences 153 (4), 602-621, 1992 | 109 | 1992 |
| The Callistophytaceae (Pteridospermopsida): I. Vegetative structures GW Rothwell Palaeontographica B 151, 171, 1975 | 109 | 1975 |
| Structure and relationships of primitive conifers G Mapes, GW Rothwell Neues Jahrb Geol Palaeontol Abh 183, 269-287, 1991 | 106 | 1991 |
| Cordaixylon dumusum n. sp.(Cordaitales). I. Vegetative structures GW Rothwell, S Warner Botanical Gazette 145 (2), 275-291, 1984 | 103 | 1984 |
