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Sistrurus ravus exiguus Campbell & Armstrong 1979
urn:lsid:organismnames.com:name:89227
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310
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Sistrurus ravus exiguus Campbell & Armstrong 1979
Campbell & Armstrong 1979. Geographic variation in the Mexican pygmy rattlesnake, Sistrurus ravus, with the description of a new subspecies. Herpetologica, 35(4) 1979: 304-317