Natural occurring intergrade
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www.SCReptiles.com 2.2 Crotalus adamanteus. 2.2 Crotalus h. atricaudatus. 2.2 Crotalus h. horridus. 1.1 Agkistrodon p. piscivorus. 1.1 Agkistrodon c. contortrix. 1.1 Agkistrodon c. mokasen. 1.1 Agkistrodon c. laticinctus. 1.1 Agkistrodon c. pictigaster. Agkistrodon c. phaeogaster. 1.2 Sistrurus miliarius barbouri. 1.1 Micrurus fulvius. 0.0.1 Micrurus fulvius tenere
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