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Crotalus molossus molossus Crotalus totonacus Crotalus molossus nigrescens Crotalus durissus cumanensis Crotalus durissus unicolor Crotalus vegrandis Crotalus durissus collilineatus Crotalus durissus terrificus Crotalus durissus cascavella Crotalus durissus ruruima Crotalus durissus durissus Crotalus tzabcan Crotalus culminatus
0 3.17 6 10 13 Time (MYA)
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