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Crotalus enyo Crotalus cerastes Crotalus polystictus Crotalus lannomi Crotalus ericsmithi Crotalus stejnegeri Crotalus scutulatus Crotalus oreganus Crotalus tigris Crotalus mitchellii Crotalus adamanteus Crotalus atrox Crotalus ruber Crotalus basiliscus Crotalus durissus Crotalus molossus Crotalus horridus Crotalus willardi Crotalus lepidus Crotalus aquilus Crotalus armstrongi Crotalus triseriatus Crotalus pusillus Crotalus ravus Crotalus transversus Crotalus intermedius Crotalus pricei
0 2.48 4.95 7 10 Time (MYA)
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