Bachelor of Science, University Arkansas, 1978. Master of Science, Arkansas State University, 1981. Doctor of Philosophy, University North Texas, 1989.
Phlebotomist St. Vincent's Infirmary, Little Rock, 1974-1978. Teaching assistant Arkansas State University, Jonesboro, 1978-1980, North Texas State University, Denton, 1980-1982. Technician biology laboratory Veterans Administration Medical Center, Dallas, 1982-1989.
Postdoctoral fellow in internal medicine Veterans Administration Medical Center/U. Texas Southwest Medical Center, since 1990.
Member American Society Parasitologists, American Society Ichthyologists and Herpetologists, Texas Academy of Sciences, Southwest Association Naturalists, National Speleology Society.
Married Elizabeth Ann Mills, August 19, 1978. Children: James Thomas III, Rachel Annual.