Gar W. Rothwell
Ph.D., University of Alberta, 1973Organismal Botany, Paleontology,
Evolution and Phylogeny
Porter Hall 401; The Ridges, Bldg. #7740 593 1129/1118
Faculty Research Focus Areas
BIOL 115 (Plant Structure and Development)
PBIO 308/508 (Morphology of Vascular Plants)
PBIO 442/542 (Experimental Anatomy of Plant Development)
PBIO 460/560 (Paleobotany)
PBIO 691 (Scientific Ethics & Academic Integrity)
Curator, Ohio University Paleobotanical Herbarium (OUPH)
President, International Organisation of Palaeobotany
Associate Editor, American Journal of Botany
Editorial Board, Review of Palaeobotany and Palynology
Research Program Summary
Studies of fossil and living land plants are directed toward a fuller understanding of phylogeny and evolution. These are explored using data from morphological, anatomical, ultrastructural, developmental, and molecular characters. Evaluations of ontogeny, reproductive biology, and organismal interactions are emphasized in interpreting development of the modern flora within the context of evolutionary ecology.
Research projects on a wide range of organismal biology topics are available for both undergraduate and graduate students who wish to become practicing scientists. These studies often focus on fossil plants, but structure, growth and development and physiology studies of living plants also are conducted. Anyone interested in doing original research and/or conducting his or her PBIO 404 undergraduate research in organismal botany, may contact Dr. Rothwell for a list and explanation of available topics.
Sanders. H., G.W. Rothwell and S.W. Wyatt. 2011. Parallel Evolution of Auxin Regulation in Rooting Systems. Plant Systematics and Evolution 291: 221-225.
Klymiuk, A., G.W. Rothwell and R.A. Stockey. 2011. The first organismal concept for an extinct species of Pinaceae: Pinus arnoldii Miller. International Journal of Plant Sciences 172: 294-313.
Rothwel, G.W., R. A. Stockey, G. Mapes, and J. Hilton. 2011. Structure and relationships of the Jurassic conifer seed cone Hughmillerites juddii gen. et comb. nov. : implications for the early evolution of Cupressaceae. Review of Palaeobotany and Palynology164: 45-59.
Jud, N.A., G.W. Rothwell and R.A. Stockey. 2010. Paleoecological and phylogenetic implications of Saxicaulis meckertii gen. et sp. nov.: a bennettitalean stem from the Upper Cretaceous of western North America. International Journal of Plant Sciences. 171: 915-925.
Stevens, L.G., J. Hilton, A.R. Rees, G.W. Rothwell and R.M. Bateman. 2010. Systematics, phylogenetics, and reproductive biology of Flemingites arcuatus sp. nov., an exceptionally preserved and partly reconstructed Carboniferous arborescent lycopsid. International Journal of Plant Sciences 171: 783-808.
Rothwell, G.W. and R.A. Stockey. 2010. Independent evolution of seed
enclosure in Bennettitales: Evidence from the anatomically preserved
cone Foxeoidea connatum gen. et sp. nov. Pp. 51-66. In C.T. Gee
[ed.], Plants in Mesozoic Time: Innovations, Phylogeny, Ecosystems (Ted
Delevoryas festschrift). Indiana University Press, Bloomington and
Stewart, W.N. and G.W. Rothwell. 1993. Paleobotany and the evolution of plants. Cambridge University Press, 521 pp.
Current and Recent Research Projects
Paleo-evo/devo: employing anatomical fingerprints of changes in gene regulation to reconstruct evolution and phylogeny
Resolving the gymnosperm tree of life
The origins of modern conifer families
Current and Recent Student Research Projects
Reconstructing a species of the filicalean fern Senftenbergia from the Pennsylvanian of Oregon.
Alternative pathways of gene regulation in the evolution of leaves in ferns and seed plants.
Evolutionary radiation of modern Equisetum in the Lower Cretaceous.
Structural finger prints for developmental regulatory pathways in fossil plants.
Polar auxin regulation in the architectural diversity of isoetalean lycophytes.
Reconstructing Pennsylvanian age fossil conifers.
Permian cardiocarpalean ovules from the Angara Province of Russia.
The most ancient complex land organisms.