Occurrence of the Garter Snake, Thamnophis sirtalis, in the Great Plains and Rocky Mountains

Occurrence of the Garter Snake, Thamnophis sirtalis, in the Great Plains and Rocky Mountains is a work by T. Paul Maslin. Garter snake is a common place name for largely innocuous, small to medium-sized serpents fitting to the genus Thamnophis in the family Colubridae. Native to North and Central America, species in the genus Thamnophis can be discovered from the subarctic plains of Canada to Costa Rica.