Douglas A. Rossman
Douglas Athon "Dag" Rossman 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, 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, Where Legends Live: A Pictorial Guide to Cherokee Mythic Places, 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.