Rossman's garter snakeRossman's garter snake is a species of snake in the family Colubridae. The species is endemic to Mexico.EtymologyThe specific name rossmani is in honor of the American herpetologist Douglas A. Rossman.Geographic rangeT. rossmani is found in the Mexican state of Nayarit.HabitatThe natural habitat of T. rossmani is freshwater wetlands.ReproductionT. rossmani is viviparous. A female was observed giving birth to four live young. Each neonate had a snout-to-vent length of about.