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Selected Publications Gar W. Rothwell, Heather Sanders, Sarah E. Wyatt, and Simcha Lev-Yadun. 2008. A fossil record for growth regulation: The role of auxin in wood evolution. Annals of the Missouri Botanical Garden 95(1): 121-134 abstract | article in pdf format Gar W. Rothwell and Eric E. Karrfalt. 2008. Growth, development, and systematics of ferns: Does Bomychium SL (Ophioglossales) really produce secondary xylem? American Journal of Botany 95(4): 414-423 abstract | full text | article in pdf format Nathan A. Jud, Gar W. Rothwell, and Ruth A. Stockey. 2008. Todea from the lower cretaceous of western North America: Implications for the phylogeny, systematics and evolution of modern Osmundaceae. American Journal of Botany 95(3): 330-339 abstract | full text | article in pdf format A. M. F. Tomescu, Gar W. Rothwell, and M. L. Trivett. 2008. Reiterative growth in the complex adaptive architecture of the Paleozoic (Pennsylvanian) filicalean fern Kaplanopteris clavata. Plant Systematics and Evolution 270(3-4): 209-216 abstract | article in pdf format A. M. F. Tomescu, R. Honegger, and Gar W. Rothwell. 2008. Earliest fossil record of bacterial-cyanobacterial mat consortia: The early Silurian passage creek biota (440 ma, Virginia, USA). Geobiology 6(2): 120-124 abstract | full text | article in pdf format Kelli A. Johnson, Gene Mapes, Larisa Doguzhaeva, and Gar W. Rothwell. 2007. Anatomically preserved cardiocarpalean ovules in the late Palaeozoic Angara floral province of Russia. Botanical Journal of the Linnean Society 155 (3): 297-305 NOV abstract | full text | article in pdf format Ruth A. Stockey, Gar W. Rothwell and Kirk R. Johnson. 2007. Cobbania corrugata gen. et comb. nov (Araceae): A floating aquatic monocot from the upper cretaceous of Western North America. American Journal of Botany 94 (4): 609-624 APR abstract | full text | article in pdf format Heather Sanders, Gar W. Rothwell, and Sarah Wyatt. 2007. Paleontological context for the developmental mechanisms of evolution. International Journal of Plant Sciences 168 (5): 719-728 JUN abstract | full text | article in pdf format Richard M. Bateman, Paul Kenrick, and Gar W. Rothwell. 2007. Do eligulate herbaceous lycopsids occur in Carboniferous strata? Hestia eremosa gen. et sp nov from the Mississippian of Oxroad Bay, East Lothian, Scotland. Review of Paleobotany and Palynology 144 (3-4): 323-335 MAY abstract | full text | article in pdf format Gar W. Rothwell, Gene Mapes, Jason Hilton and Neville T. Hollingworth. 2007. Pollen cone anatomy of Classostrobus crossii sp nov (Cheirolepidiaceae). International Journal of Coal Geology 69 (1-2): 55-67 JAN 2 abstract | full text | article in pdf format Alexandru M. F. Tomescu, Gar W. Rothwell and Rosmarie Honegger. 2006. Cyanobacterial macrophytes in an Early Silurian (Llandovery) continental biota: Passage Creek, lower Massanutten Sandstone, Virginia, USA. Lethaia 39 (4): 329-338 DEC abstract | full text | article in pdf format Stefan A. Little, Ruth A. Stockey and Gar W. Rothwell. 2006. Solenostelopteris skogiae sp nov from the Lower Cretaceous of Vancouver Island. Journal of Plant Research 119 (5): 525-532 SEP full text | article in pdf format Zhou Yi-Long, Wang Shi-Jun, Jason Hilton, and Gar W. Rothwell. 2006. Achlamydocarpon pingquanensis sp nov (Lycopsida): A novel, anatomically preserved Lepidodendralean disseminule from the Lower Permian of North China. International Journal of Plant Science 167 (3): 567-577 MAY 2006 abstract | full text | article in pdf format Ruth A. Stockey and Gar W. Rothwell. 2006. Introduction: Evolution of modern ferns. International Journal of Plant Science 167 (3): 613-614 MAY full text | article in pdf format Alexandru Mihail Florian Tomescu, Gar W. Rothwell, and Mary Louise Trivett. 2006. Kaplanopteridaceae Fam. Bov., additional diversity in the initial radiation of Filicalean ferns. International Journal of Plant Science 167 (3): 615-630 MAY abstract | full text | article in pdf format Matthew J. Vavrek, Ruth A. Stockey, and Gar W. Rothwell. 2006. Osmunda vancouverensis sp nov ( osmundaceae), permineralized fertile frond segments from the lower Cretaceous of British Columbia, Canada. International Journal of Plant Science 167 (3): 631-637 MAY abstract | full text | article in pdf format Randal A. Mindell, Ruth A. Stockey, Gar W. Rothwell, and Graham Beard. 2006. Gleichenia appianensis sp nov (gleicheniaceae): A permineralized rhizome and associated vegetative remains from the Eocene of Vancouver Island, British Columbia. International Journal of Plant Science 167 (3): 639-647 MAY abstract | full text | article in pdf format Ruth A. Stockey, Gar W. Rothwell, and Stefan A. Little. 2006. Relationships among fossil and living Dipteridaceae: Anatomically preserved Hausmannia from the lower Cretaceous of Vancouver Island. International Journal of Plant Science 167 (3): 649-663 MAY abstract | full text | article in pdf format Genaro R. Hernandez-Castillo, Ruth A. Stockey, and Gar W. Rothwell. 2006. Anemia quatsinoensis sp nov (Schizaeaceae), a permineralized fern from the lower Cretaceous of Vancouver Island International Journal of Plant Science 167 (3): 665-674 MAY abstract | full text | article in pdf format Mary Louise Trivett, Ruth A. Stockey, Gar W. Rothwell, and Graham Beard. 2006. Paralygodium vancouverensis sp nov (Schizaeaceae): Additional evidence for Filicalean diversity in the paleogene of North America. International Journal of Plant Science 167 (3): 675-681 MAY abstract | full text | article in pdf format Stefan A. Little, Ruth A. Stockey, and Gar W. Rothwell. 2006. Stramineopteris aureopilosus gen. et sp nov.: Reevaluating the role of vegetative anatomy in the resolution of leptosporangiate fern phylogeny. International Journal of Plant Science 167 (3): 683-694 MAY 2006 abstract | full text | article in pdf format Gar W. Rothwell and Ruth A. Stockey. 2006. Combining characters of Pteridaceae and tree ferns: Pterisorus radiata gen. et sp nov., a permineralized Lower Cretaceous Filicalean with radial sori. International Journal of Plant Science 167 (3): 695-701 MAY abstract | full text | article in pdf format Rudolph Serbet and Gar W. Rothwell. 2006. Anatomically preserved ferns from the Late Cretaceous of Western North America. II. Blechnaceae/dryopteridaceae. International Journal of Plant Science 167 (3): 703-709 MAY abstract | full text | article in pdf format Selena Y. Smith, Ruth A. Stockey, Harufumi Nishida, and Gar W. Rothwell. 2006. Trawetsia princetonensis gen. et sp nov (Blechnaceae): A permineralized fern from the middle Eocene Princeton Chert. International Journal of Plant Science 167 (3): 711-719 MAY abstract | full text | article in pdf format Steven J. Karafit, Gar W. Rothwell, Ruth A. Stockey, and Harufumi Nishida. 2006. Evidence for sympodial vascular architecture in a filicalean fern rhizome: Dickwhitea allenbyensis gen. et sp nov (Athyriaceae). International Journal of Plant Science 167 (3): 721-727 MAY 2006 abstract | full text | article in pdf format Ruth A. Stockey, Trevor C. Lantz, and Gar W. Rothwell. 2006. Speirseopteris orbiculata gen. et sp nov (Thelypteridaceae), a derived fossil Filicalean from the Paleocene of western North America. International Journal of Plant Science 167 (3): 729-736 MAY abstract | full text | article in pdf format Gar W. Rothwell and Kevin C. Nixon. 2006. How does the inclusion of fossil data change our conclusions about the phylogenetic history of euphyllophytes? International Journal of Plant Science 167 (3): 737-749 MAY abstract | full text | article in pdf format Gar W. Rothwell and Michael T. Dunn. 2006. A century of seed ferns: Introduction to the symposium Journal of the Torrey Botanical Society. 133 (1): 4-6 JAN-MAR abstract Gar W. Rothwell, Gene Mapes and Genaro R. Hernandez-Castillo. 2005. Hanskerpia gen. nov. and phylogenetic relationships among the most ancient conifers (Voltziales). Taxon 54: 733-750. abstract (pdf available from IngentaConnect at this link) Gar W. Rothwell, and S. Lev-Yadun. 2005. Evidence of polar auxin flow in 375 million-year-old fossil wood. American Journal of Botany 92: 903-906. abstract | full text article | article in pdf format Ruth A. Stockey, J. Kvacek, R.S. Hill, G.W. Rothwell and Z. Kvacek. 2005. The fossil record of the Cupressaceae s.l., in: Farjon, A., A monograph of Cupressaceae and Sciadopitys. Royal Botanic Gardens, Kew. Ruth A. Stockey, and Gar W. Rothwell. 2004. Cretaceous tree ferns of western North America: Rickwoodopteris hirsuta (Cyatheaceae s.l). Review of Palaeobotany and Palynology 132(1-2): 103-114. abstract (full text and pdf available from Science Direct at this link) Gar W.Rothwell, Michelle R. Van Atta, Harvey E. Ballard Jr. and Ruth A. Stockey. 2004. Molecular phylogenetic relationships among Lemnaceae and Araceae using the chlorolplast trnL-trnF intergenic spacer. Molecular Phylogenetics and Evolution 30(2): 378-385. abstract (full text and pdf available from ScienceDirect at this link) Rudolph Serbet, and Gar W. Rothwell. 2003. Anatomically preserved ferns from the late Cretaceous of western North America: Dennstaedtiaceae. International Journal of Plant Sciences 164(6): 1041-1051. abstract | full text article | article in pdf format G. W. Rothwell and S. Lev-Yadun. 2005. Evidence of polar auxin flow in 375 million-year-old fossil wood. American Journal of Botany 92 (6): 903-906 JUN abstract | full text | article in pdf format Kamal Jeet Singh, Gar W. Rothwell, Gene Mapes, and Shaila Chandra. 2003. Reinvestigation of the coniferophyte morphospecies Buriadia heterophylla Seward and Sahni, with reinterpretation of vegetative diversity and putative seed attachments. Review of Palaeobotany and Palynology 127(1-2): 25-43. abstract (full text and pdf available from ScienceDirect at this link) Michael T. Dunn, Gar W. Rothwell, and Gene Mapes. 2003. On paleozoic plants from marine strata: Trivena arkansana (Lyginopteridaceae) gen. et sp nov., a lyginopterid from the Fayetteville Formation (middle Chesterian/Upper Mississippian) of Arkansas, USA. American Journal of Botany 90(8): 1239-1252. abstract | full text article | article in pdf format Genaro R. Hernandez-Castillo, Gar W. Rothwell, Ruth A. Stockey, and Gene Mapes. 2003. Growth architecture of Thucydia mahoningensis, a model for primitive walchian conifer plants. International Journal of Plant Sciences 164(3): 443-452. abstract | full text article | article in pdf format Selena Y. Smith, Gar W. Rothwell, and Ruth A. Stockey. 2003. Cyathea cranhamii sp. nov. (Cyatheaceae), anatomically preserved tree fern sori from the Lower Cretaceous of Vancouver Island, British Columbia American Journal of Botany 90(5): 755-760. abstract | full text article | article in pdf format Michael T. Dunn, Michael Krings, Gene Mapes, Gar W. Rothwell, Royal H. Mapes, and Sun Keqin. 2003. Medullosa steinii sp nov., a seed fern vine from the Upper Mississippian. Review of Palaeobotany and Palynology 124 (3-4): 307-324. abstract (full text and pdf available from this link) Ruth A. Stockey, and Gar W. Rothwell. 2003. Anatomically preserved Williamsonia (Williamsoniaceae): Evidence for Bennettitalean reproduction in the Late Cretaceous of Western North America. International Journal of Plant Sciences 164 (2): 251-262. abstract | full text article | article in pdf format Michael T. Dunn, Gar W. Rothwell, and Gene Mapes. 2002. Additional observations on Rhynchosperma quinnii (Medullosaceae): A permineralized ovule from the chesterian (Upper Mississippian) Fayetteville Formation of Arkansas. American Journal of Botany 89(11): 1799-1808. abstract | full text article | article in pdf format Gar W. Rothwell, and Ruth A. Stockey. 2002. Anatomically preserved Cycadeoidea (Cycadeoidaceae) With a reevaluation of systematic characters for the seed cones of Bennettitales. American Journal of Botany 89(9): 1447-1458. abstract | full text article | article in pdf format Gar W. Rothwell, Edith L. Taylor, and Thomas N. Taylor. 2002. Ashicaulis woolfei n. sp.: Additional evidence for the antiquity of osmundaceous ferns from the Triassic of Antarctica. American Journal of Botany 89(2): 352-361. abstract | full text article | article in pdf format Michael T. Dunn, Gene Mapes, and Gar W. Rothwell. 2002. On paleozoic plants from marine strata: Hexaloba finisensia new genus and species, a trigonocarpalean ovule from the Virgilian (Upper Pennsylvanian : Gzhelian) Finis Shale of Texas. Journal of Paleontology 76(1): 173-180. abstract | full text article | article in pdf format Alexandru M.F. Tomescu, Gar W. Rothwell, and Gene Mapes. 2001. Lyginopteris royalii sp nov from the Upper Mississippian of North America. Review of Palaeobotany and Palynology. 116(3-4): 159-173. abstract (full text and pdf available from this link) Jason Hilton, Gar W. Rothwell, Jean Galtier, Cheng-Sen Li and Shi-Jun Wang. 2001. Permineralized cardiocarpalean ovules in wetland vegetation from Early Permian volcanoclastic sediments of China. Palaeontology 44(5): 811-825. abstract (full text and pdf available from this link) Stephen R. Ratzel, Gar W. Rothwell, Gene Mapes, Royal H. Mapes, and Larisa A. Doguzhaeva. 2001. Pityostrobus hokodzensis , a new species of pinaceous cone from the Cretaceous of Russia. Journal of Paleontology 75(4): 895-900. full text article | article in pdf format Genaro R. Hernandez-Castillo, Gar W. Rothwell and Gene Mapes. 2001. Thucydiaceae fam. nov., with a review and reevaluation of Paleozoic walchian conifers. International Journal of Plant Sciences 162(5): 1155-1185. abstract | full text article | article in pdf format Genaro R. Hernandez-Castillo, Gar W. Rothwell and Gene Mapes. 2001. Compound pollen cones in a Paleozoic conifer. American Journal of Botany 88(6): 1139-1142. abstract | full text article | article in pdf format Gar W. Rothwell, and Gene Mapes. 2001. Barthelia furcata gen. et sp. nov., with a review of Paleozoic coniferophytes and a discussion of coniferophyte systematics. International Journal of Plant Sciences 162(3): 637-667. abstract | full text article | article in pdf format Kathleen B. Pigg, and Gar W. Rothwell. 2001. Anatomically preserved Woodwardia virginica (Blechnaceae) and a new filicalean fern from the middle Miocene Yakima Canyon flora of central Washington, USA. American Journal of Botany 88(5): 777-787. abstract | full text article | article in pdf format Ruth A. Stockey, Gar W. Rothwell, Heather D. Addy and Randolph S. Currah. 2001. Mycorrhizal association of the extinct conifer Metasequoia milleri. Mycological Research. 105(2): 202-205. volume | abstract | article in pdf format Ruth A. Stockey, Gar W. Rothwell and Amy B. Falder. 2001. Diversity among taxodioid conifers; Metasequoia foxii sp. Nov. From the Paleocene of central Alberta, Canada. International Journal of Plant Sciences 162(1): 221-234. abstract | full text article | article in pdf format Gar W. Rothwell, Lea Grauvogel-Stamm and Gene Mapes. 2000. An herbaceous fossil conifer: Gymnospermous ruderals in the evolution of Mesozoic vegetation Palaeogeography, Palaeoclimatology, Palaeoecology. 156(1-2): 139-145. abstract (full text and pdf available from this link) Trevor C. Lantz, Gar W. Rothwell, and Ruth A. Stockey. 1999. Conantiopteris schuchmanii, gen. et sp. nov., and the role of fossils in resolving the phylogeny of Cyatheaceae s. Journal of Plant Research 112(3): 361-381. abstract (pdf available from this link) Gar W. Rothwell. 1999. Fossils and ferns in the resolution of land plant phylogeny. The Botanical Review 65: 188-218. abstract Gar W. Rothwell. 1999. Gnetophytes. Encyclopedia of Paleontology, Fitzroy Dearborn Publishers. Amy B. Falder, Ruth A. Stockey and Gar W. Rothwell. 1999. In situ fossil seedlings of a Metasequoia-like taxodiaceous conifer from Paleocene river floodplain deposits of central Alberta, Canada. American Journal of Botany 86(6): 900-902. abstract | full text article | article in pdf format Ruth A. Stockey, Georgia L. Hoffman, and Gar W. Rothwell. 1997. The fossil monocot Limnobiophyllum scutatum: resolving the phylogeny of the Lemnaceae. American Journal of Botany 84(3): 355-368. abstract | article in pdf format Gar W. Rothwell, and Ruth A. Stockey. 1994. Pteridophytes and gymnosperms - current concepts of structure, evolutionary history, and phylogeny. Journal of Plant Research 107(1088): 409-409. (not available online) Wilson N. Stewart, and Gar W. Rothwell. 1993. Paleobotany and the evolution of plants. Cambridge University Press, 521 pp.
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