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1854
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Dumeril, A. M. Constant, Gabriel Bibron, and Auguste H. A. Dumeril. Erpetologie Generale ou Histoire Naturelle Complete Des Reptiles. Tome Septieme - Premiere Partie. [General Herpetology or Complete Natural History of Reptiles. Volume Seven - First Part.] Librairie Encyclopedique de Roret, Paris, France. 780pp.
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1967
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Brattstrom, Bayard H. A succession of Pliocene and Pleistocene snake fauna from the High Plains of the United States. Copeia 1967(1):188-202
An examination (or in many cases, a re-examination) of 11,000 accumulated skeletal elements from fossil deposits collected at various sites and ranging in age from Lower Pliocene to the Recent.
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1998
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Powell, Robert, Joseph T Collins, and Errol D Hooper Jr. A Key to Amphibians & Reptiles of the Continental United States and Canada. Univ Press of Kansas, Lawrence, Kansas. 131pp.
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2004
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Gibbons, J. Whitfield and Michael E. Dorcas. North American Water Snakes. University of Oklahoma Press, Norman. pp.
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2012
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Powell, Robert, Joseph T Collins, and Errol D Hooper Jr. Key to the Herpetofauna of the Continental United States and Canada: Second Edition, Revised and Updated. Univ Press of Kansas, Lawrence, Kansas. 152pp.
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2017
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Crother, Brian I. (editor) Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding. Eighth edition. Herpetological Circulars (43):1-102
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2019
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Powell, Robert, Joseph T Collins, and Errol D Hooper Jr. Key to the Herpetofauna of the Continental United States and Canada. Third Edition. Univ Press of Kansas, Lawrence, Kansas. 192pp.
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2023
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Nuñez, Leroy P., Levi N Gray, David Weisrock, and Frank T Burbrink. The phylogenomic and biogeographic history of the Gartersnakes, Watersnakes, and Allies (Natricidae: Thamnophiini). Molecular Phylogenetics and Evolution 186(2023):107844
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