Jacques Gauthier 5121807 218145526 2008-06-09T10:40:20Z JAnDbot 1725149 robot Modifying: [[la:Iacobus Armandus Gauthier]] '''Jacques Armand Gauthier''' is a [[vertebrate paleontology|vertebrate paleontologist]], [[comparative anatomy|comparative morphologist]], and systematist, and one of the founders of the use of [[cladistics]] in biology. He received a BS in Zoology at [[San Diego State University]] in [[1973]], a Masters of Science at the same institute in 1980, and a PhD in Paleontology from the [[University of California]], Berkeley, in [[1984]]<ref>Gauthier (1984)</ref>. Currently he is a Professor of Geology and Geophysics and Ecology and Evolutionary Biology and Curator of Vertebrate Paleontology and Vertebrate Zoology at [[Yale University]]. His master's thesis, the content of which was published in 1982, is a classic work on the paleontology and phylogeny of the lizard clade [[Anguimorpha]] that remains a core reference for morphological research on [[Xenosauridae]] and [[Anguidae]] in particular. His PhD thesis constituted the first major [[cladistic]] analysis of [[Diapsida]], as well as arguing for the [[monophyly]] of the [[dinosaur]]s. He followed this with an important paper on the origin of [[bird]]s from [[theropod]]s<ref>Gauthoer (1986)</ref>. This was the first detailed cladistic analysis of the theropod dinosaurs, and initiated a revolution in dinosaur [[phylogeny|phylogenetics]], in which cladistics replaced the Linnaean system in the [[scientific classification|classification]] and phylogenetic understanding of the dinosaurs. Gauthier's corpus is remarkable in that he contributed the foundational phylogenetic studies of [[Archosauria]] and [[Lepidosauria]], two major amniote clades; and he was the primary author of the foundational and still widely cited phylogenetic study of [[Amniota]]<ref>Gauthier, Kluge & Rowe (1988); Gauthier (1994)</ref> as a whole. The phylogenetic character sets from his 1984 and 1986 works, the 1988 amniote paper, and the 1988 [[lepidosaur]] and [[squamate]] papers still form the core of essentially all gross-anatomy-based phylogenetic analyses of these groups, and as such are among the most highly cited papers in amniote morphology and paleobiology. The 1988 amniote paper is also frequently cited to demonstrate the importance of taxon sampling in phylogenetic analysis, in particular the importance of sampling rare or fossil taxa that can break 'long branches' along which convergence can occur. More recently, he has argued together with [[Kevin de Queiroz]] for replacing [[Linnaean taxonomy]] with the [[PhyloCode]]{{Verify source|date=November 2007}}<!-- you can replace Linnean with Phylogenetic taxonomy and/or replace or supplement the Linnean codes with PhyloCode (supplement because e.g. ICZN only covers families to subspecies, not higher ranks) -->. In addition to his theoretical work on systematics and taxonomy, Gauthier continues to study the anatomy and relationships of diapsids, particularly lepidosaurs. His lizard work currently focuses on [[Scincomorpha]], following on a career-long interest in the unusual clade [[Xantusiidae]]. He is a principal investigator on the [[National Science Foundation]]-funded effort to reconstruct the phylogeny of lizards and snakes ([[Squamata]]) using gross anatomy and molecular structure, building on his earlier work in collaboration with Richard Estes and Kevin de Queiroz, which established the most widely accepted phylogeny of the group. ==Footnotes== {{Reflist}} ==References== * {{aut|Estes, R.; de Queiroz, K. & [[Jacques Gauthier|Gauthier, Jacques]]}} (1988): Phylogenetic relationships within Squamata. ''In:'' {{aut|Estes, R. & Pregill, G. (eds.)}}: ''The Phylogenetic Relationships of the Lizard Families'': 15-98. Stanford University Press, Palo Alto. * {{aut|Gauthier, Jacques A.}} (1982): Fossil xenosaurid and anguid lizards from the early Eocene of Wyoming, and a revision of the Anguioidea. ''Contributions to Geology, University of Wyoming'' '''21''': 7-54. * {{aut|Gauthier, Jacques A.}} (1984): ''A cladistic analysis of the higher systematic categories of the Diapsida.'' [PhD dissertation]. Available from University Microfilms International, Ann Arbor, #85-12825, vii + 564 pp. * {{aut|Gauthier, Jacques A.}} (1986): Saurischian monophyly and the origin of birds. ''In:'' {{aut|Padian, K. (ed.)}}: ''The Origin of Birds and the Evolution of Flight''. ''Memoirs of the California Academy of Sciences'' '''8''': 1–55. * {{aut|Gauthier, Jacques A.; Estes, R. & [[Kevin de Queiroz|de Queiroz, Kevin]]}} (1988): A phylogenetic analysis of Lepidosauromorpha. ''In:'' {{aut|Estes, R. & Pregill, G. (eds.)}}: ''The Phylogenetic Relationships of the Lizard Families'': 15-98. Stanford University Press, Palo Alto. * {{aut|Gauthier, Jacques A.; Kluge, A. & Rowe, T.}} (1988): Amniote phylogeny and the importance of fossils. ''Cladistics'' '''4'''(2): 105–209. * {{aut|Rowe, T. & Gauthier, Jacques}} (1990): Ceratosauria. ''In:'' {{aut|Weishample, D.; Dodson, P. & [[Halszka Osmólska|Osmólska, Halszka]] (eds.)}}: ''The Dinosauria'': 151-168. University of California Press, Berkeley. * {{aut|[[Kevin de Queiroz|de Queiroz, Kevin]] & Gauthier, Jacques A.}} (1992): Phylogenetic taxonomy. ''[[Annual Reviews|Annu. Rev. Ecol. Syst.]]'' '''23''': 449–480. * {{aut|Gauthier, Jacques A.}} (1994): The diversification of the amniotes. ''In:'' {{aut|Prothero, D. (ed.)}}: ''Major Features of Vertebrate Evolution: Short Courses in Paleontology'': 129-159. Paleontological Society. * {{aut|Donoghue, M.J. & Gauthier, Jacques A.}} (2004): Implementing the PhyloCode. ''[[Trends (journals)|Trends Ecol. Evol.]]'' '''19'''(6): 281–282. ==External links== *[http://www.yale.edu/peabody/collections/vp/vp_gauthier.html Yale Peabody Museum] *[http://wiki.cotch.net/index.php/Jacques_Gauthier EvoWiki] {{DEFAULTSORT:Gauthier, Jacques}} [[Category:American paleontologists]] [[Category:American curators]] [[Category:Phylogenetics]] [[Category:San Diego State University alumni]] [[Category:University of California, Berkeley alumni]] [[Category:Yale University faculty]] [[Category:Science teachers]] [[Category:American science writers]] [[Category:Living people]] [[Category:1951 births]] [[cs:Jacques Gauthier]] [[fr:Jacques Gauthier]] [[la:Iacobus Armandus Gauthier]] [[ja:ジャック・ゴーティエ]] [[pl:Jacques Gauthier]]