Question: Who was an American evolutionary theorist and biologist who vocally supported the usage of the term "undulipodium"?
Context: Adaptation and Natural Selection: A Critique of Some Current Evolutionary Thought is a 1966 book by the American evolutionary biologist George C. Williams.  Williams, in what is now considered a classic by evolutionary biologists, outlines a gene-centered view of evolution, disputes notions of evolutionary progress, and criticizes contemporary models of group selection, including the theories of Alfred Emerson, A. H. Sturtevant, and to a smaller extent, the work of V. C. Wynne-Edwards.  The book takes its title from a lecture by George Gaylord Simpson in January 1947 at the Princeton University.  Aspects of Williams' book were popularised by Richard Dawkins in his 1976 book "The Selfish Gene". Joan E. Strassmann is a North American evolutionary biologist and the Charles Rebstock Professor of Biology at the Washington University in St. Louis.  She is known for her work on social evolution and particularly how cooperation prospers in the face of evolutionary conflicts. Beth Alison Shapiro (born 1976) is an American evolutionary molecular biologist.  She is an Associate Professor in the Department of Ecology & Evolutionary Biology at the University of California, Santa Cruz.  Shapiro's work has centered on the analysis of ancient DNA.  She was awarded a MacArthur Fellowship (aka “genius grant”) in 2009 and a Royal Society University Research Fellowship (URF) in 2006. Lynn Margulis (born Lynn Petra Alexander; March 5, 1938 – November 22, 2011) was an American evolutionary theorist and biologist, science author, educator, and popularizer, and was the primary modern proponent for the significance of symbiosis in evolution.  Historian Jan Sapp has said that "Lynn Margulis's name is as synonymous with symbiosis as Charles Darwin's is with evolution."  In particular, Margulis transformed and fundamentally framed current understanding of the evolution of cells with nuclei – an event Ernst Mayr called "perhaps the most important and dramatic event in the history of life" – by proposing it to have been the result of symbiotic mergers of bacteria.  Margulis was also the co-developer of the Gaia hypothesis with the British chemist James Lovelock, proposing that the Earth functions as a single self-regulating system, and was the principal defender and promulgator of the five kingdom classification of Robert Whittaker. An undulipodium (a Greek word meaning "swinging foot") or a 9+2 organelle is a motile filamentous extracellular projection of eukaryotic cells.  It is basically synonymous to flagella and cilia of the prokaryotic cells.  In fact the name was coined to differentiate from the analogous structures present in prokaryotic cells.  It is structurally a complex of microtubules along with motor proteins.  The usage of the term is most vocally supported by Lynn Margulis, especially in support of her endosymbiotic theory.  The eukaryotic cilia are structurally identical to eukaryotic flagella, although distinctions are sometimes made according to function and/or length. David Mark Hillis (born December 21, 1958 in Copenhagen, Denmark) is an American evolutionary biologist, and the Alfred W. Roark Centennial Professor of Biology at the University of Texas at Austin.  He is best known for his studies of molecular evolution, phylogeny, and vertebrate systematics.  He created the popular Hillis Plot depiction of the evolutionary tree of life. Margaret Gale Kidwell (born August 17, 1933) is a British American evolutionary biologist and Regents’ Professor Emerita at the University of Arizona, Tucson.  She grew up on a farm in the English Midlands during World War II.  After graduating from the University of Nottingham in 1953, she worked in the British Civil Service as an Agricultural Advisory Officer from 1955-1960.  She moved to the USA in 1960 under the auspices of a Kellogg Foundation Fellowship to study Genetics and Statistics at Iowa State University.  She married quantitative geneticist James F. Kidwell in 1961, obtained her MS degree in 1962 and moved with her husband to Brown University in 1963.  She received her PhD from Brown University in 1973 under the guidance of Masatoshi Nei.  From 1973 to 1984 she pursued independent research into a number of anomalous genetic phenomena in "Drosophila" which later lead to collaborative studies resulting in the discovery of hybrid dysgenesis and the isolation of transposable P elements.  After appointment as Professor of Biology at Brown University in 1984 she moved to the University of Arizona in 1985 as Professor of Ecology and Evolutionary Biology.  Additional positions included Chair of the Interdisciplinary Genetics Program from 1988-1991 and Head of the Department of Ecology and Evolutionary Biology from 1992-1997.  Research at the University of Arizona has increasingly focused on the evolutionary significance of transposable genetic elements.  In 1996, she was the first woman from Arizona to be elected to the United States National Academy of Sciences. Cheryl A. Zimmer is a North American evolutionary biologist whose research interests are focused marine population ecology, specifically the role of hydrodynamics as a driving force in the evolution of marine life.  She is a professor in the Department of Ecology and Evolutionary Biology at the University of California, Los Angeles.  There she runs the Zimmer Lab, in collaboration with her husband and colleague Richard Zimmer. August Friedrich Leopold Weismann (17 January 1834 – 5 November 1914) was a German evolutionary biologist.  Ernst Mayr ranked him as the second most notable evolutionary theorist of the 19th century, after Charles Darwin.  Weismann became the Director of the Zoological Institute and the first Professor of Zoology at Freiburg. Ishikawa Chiyomatsu (石川 千代松 , January 30, 1861 – January 17, 1935) was a Japanese biologist, zoologist, evolutionary theorist, and ichthyologist at the Naples Zoological Station starting 1887.  He was responsible for disseminating Darwin's ideas on evolution in Japan.  After graduating from the University of Tokyo, he studied in Germany under eminent evolutionary theorist August Weismann.  He was also the 5th principal of the Dokkyo Middle School in Tokyo.
Answer: Lynn Margulis