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| Crotalus cerastes (Stovepipe Wells, Death Valley National Park, Inyo County, California) |
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| Crotalus cerastes cerastes (Sandy Valley, Clark County, Nevada) |
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| Crotalus cerberus ( Mount Graham, Pinaleno Mtns.) |
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| Crotalus durissus terrificus |
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| Crotalus durissus vegrandis |
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| Crotalus horridus (Coon Creek Alabama) |
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| Crotalus lepidus klauberi (Berrenda Creek New Mexico) |
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| Crotalus lepidus klauberi (Doña Ana County, New Mexico) |
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| Crotalus molossus (Madera Canyon Santa Rita Mountains Santa Cruz County Arizona) |
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| Crotalus oreganus (El Sobrante, Contra Costa County) |
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| Crotalus ruber |
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| Crotalus viridis (Woods county Oklahoma) |
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| Vipera ammodytes ( KRK ) |
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| Vipera ammodytes meridionalis ( Olympus Mtn. Greece ) |
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