| Classification of the architecture of dicotyledonous leaves LJ Hickey American journal of botany 60 (1), 17-33, 1973 | 1760 | 1973 |
| Manual of Leaf Architecture B Ellis, DC Daly, LJ Hickey, KR Johnson, JD Mitchell, P Wilf, SL Wing Cornell University Press, Ithaca, NY, 2009 | 884 | 2009 |
| A revised classification of the architecture of dicotyledonous leaves LJ Hickey Anatomy of the Dicotyledons 1, 25-39, 1979 | 750 | 1979 |
| The bases of angiosperm phylogeny: vegetative morphology LJ Hickey, JA Wolfe Annals of the Missouri Botanical Garden 62 (3), 538-589, 1975 | 643 | 1975 |
| Early Cretaceous fossil evidence for angiosperm evolution LJ Hickey, JA Doyle The Botanical Review 43 (1), 3-104, 1977 | 585 | 1977 |
| The molecular fossil record of oleanane and its relation to angiosperms JM Moldowan, J Dahl, BJ Huizinga, FJ Fago, LJ Hickey, TM Peakman, ... Science 265 (5173), 768-771, 1994 | 524 | 1994 |
| Pollen and leaves from the mid-Cretaceous Potomac Group and their bearing on early angiosperm evolution JA Doyle, LJ Hickey Origin and Early Evolution of Angiosperms, 139-206, 1976 | 459 | 1976 |
| Stratigraphy and paleobotany of the Golden Valley Formation (early Tertiary) of western North Dakota LJ Hickey Geological Society of America, 1977 | 427 | 1977 |
| Paleobotanical evidence for near present-day levels of atmospheric CO2 during part of the Tertiary DL Royer, SL Wing, DJ Beerling, DW Jolley, PL Koch, LJ Hickey, ... Science 292 (5525), 2310-2313, 2001 | 412 | 2001 |
| Clasificación de la arquitectura de las hojas de dicotiledóneas LJ Hickey Boletín de la Sociedad Argentina de Botánica 16 (1-2), 1-26, 1974 | 353 | 1974 |
| Plant and mammal diversity in the Paleocene to Early Eocene of the Bighorn Basin SL Wing, J Alroy, LJ Hickey Palaeogeography, Palaeoclimatology, Palaeoecology 115 (1-4), 117-155, 1995 | 192 | 1995 |
| Implications of an exceptional fossil flora for Late Cretaceous vegetation SL Wing, LJ Hickey, CC Swisher Nature 363 (6427), 342-344, 1993 | 187 | 1993 |
| Phylogenetic evidence for the herbaceous origin of angiosperms DW Taylor, LJ Hickey Plant Systematics and Evolution 180 (3), 137-156, 1992 | 186 | 1992 |
| Ecological conservatism in the “living fossil” Ginkgo DL Royer, LJ Hickey, SL Wing Paleobiology 29 (1), 84-104, 2003 | 184 | 2003 |
| An Aptian plant with attached leaves and flowers: implications for angiosperm origin DW Taylor, LJ Hickey Science 247 (4943), 702-704, 1990 | 176 | 1990 |
| Paleocene stratigraphy and flora of the Clark's Fork Basin LJ Hickey University of Michigan Papers on Paleontology 24, 33-49, 1980 | 176 | 1980 |
| Megafloral change across the Cretaceous/Tertiary boundary in the northern Great Plains and Rocky Mountains, USA KR Johnson, LJ Hickey Global Catastrophes in Earth History; An Interdisciplinary Conference on …, 1990 | 153 | 1990 |
| Megafloral change across the Cretaceous-Tertiary boundary, northern Great Plains, U.S.A KR Johnson, LJ Hickey Global Catastrophes in Earth History: An Interdisciplinary Conference on …, 1991 | 146* | 1991 |
| Carbon isotope evidence implying high O2/CO2 ratios in the Permo-Carboniferous atmosphere DJ Beerling, JA Lake, RA Berner, LJ Hickey, DW Taylor, DL Royer Geochimica et Cosmochimica Acta 66 (21), 3757-3767, 2002 | 136 | 2002 |
| Arctic terrestrial biota: paleomagnetic evidence of age disparity with mid-northern latitudes during the late Cretaceous and early Tertiary LJ Hickey, RM West, MR Dawson, DK Choi Science 221 (4616), 1153-1156, 1983 | 136 | 1983 |
