The green water snake (Nerodia cyclopion) is a common species of nonvenomous natricine snake endemic to the southeastern United States.
^Hammerson, G.A. (2007). "Nerodia cyclopion". IUCN Red List of Threatened Species. 2007: e.T63853A12722283. doi:10.2305/IUCN.UK.2007.RLTS.T63853A12722283.en. Retrieved 23 December 2017.
^"Nerodia cyclopion ". ITIS (Integrated Taxonomic Information System). www.itis.gov
^Boulenger, G.A. (1893). Catalogue of the Snakes in the British Museum (Natural History). Volume I., Containing the Families ... Colubridæ Aglyphæ, part. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers.) xiii + 448 pp. + Plates -XXVIII. (Tropidonotus cyclopium [sic], pp. 244-245).
^Cite error: The named reference Schmidt&Davis1941 was invoked but never defined (see the help page).
^Smith, H.M., and E.D. Brodie Jr. (1982). Reptiles of North America: A Guide to Field Identification. New York: Golden Press. 240 pp. ISBN 0-307-13666-3 (paperback). (Nerodia c. cyclopion, p. 154).
The greenwatersnake (Nerodia cyclopion) is a common species of nonvenomous natricine snake endemic to the southeastern United States. N. cyclopion is...
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