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Publication: U. S. Fish and Wildlife Service 2013 Endangered and Threatened Wildlife and Plants; Threatened Status for the Northern Mexican Gartersnake and Narrow-headed Gartersnake Federal Register, vol. 78, no. 132 41500-41547

ITIS records citing this publication
 
 Kingdom Animalia
  Thamnophis eques megalops (Kennicott, 1860) -- valid -- Northern Mexican Garter Snake, Northern Mexican Gartersnake, Brown Gartersnake
  Thamnophis rufipunctatus (Cope, 1875) -- valid -- Culebra-de agua cabeza angosta, Narrow-headed Garter Snake, Narrowhead Garter Snake, Narrowhead Watersnake, Narrow-headed Gartersnake
   

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