| 1978 | | Instructor, Northwestern University Archeological Field Program, Evanston, IL
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| 1978 - 80 | | Graduate Teaching Assistant, Department of Anthropology, University of Arkansas
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| 1979 - 1981 | | Archeologist, Center for American Archeology, Kampsville, IL
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| 1982 | | Archeologist, Arkansas Archeological Survey, Fayetteville, AR
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| 1982 - 1987 | | Graduate Teaching Assistant, Department of Anatomy, Univ. of Illinois at Chicago
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| 1984 - 1985 | | Research Assistant, Dept. Anatomy and Cell Biology, Northwestern Univ., Evanston, IL
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| 1987 - 1990 | | Post-doctoral Research Associate, Department of Zoology, University of Texas at Austin
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| 1990 - 1995 | | Assistant Professor, Dept. Cell Biology & Neuroscience, UT Southwestern Med. Ctr., Dallas, TX
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| 1995 - | | Assistant Professor, Dept. Biological Sciences, Florida International University, Miami, FL
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