Douglas A. Rossman
Douglas Athon "Dag" Rossman (July 4, 1936 – July 23, 2015) was a U.S. herpetologist specializing in garter snakes. He studied at the University of Florida, where he was awarded a Ph.D. in 1961. He was a professor of zoology at the Louisiana State University in Baton Rouge, Louisiana. He co-authored "The Amphibians and Reptiles of Louisiana" (), and also "The Garter Snakes: Evolution and Ecology" (). His wife, Nita Jane Rossman (born 1936), also has an interest in herpetology and even had a subspecies named after her: "Thamnophis sauritus nitae", a subspecies of the eastern ribbon snake. She  had collected the holotype for this subspecies on a field trip with her husband for his dissertation research, and he named it in her honor. Rossman also wrote "The Nine Worlds: A Dictionary of Norse Mythology" (1983), "Where Legends Live: A Pictorial Guide to Cherokee Mythic Places" (1988), and several other works related to Norse mythology. Douglas Rossman is commemorated in the scientific name of a species of Mexican garter snake, "Thamnophis rossmani".