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Simalia boeleni Aspidites melanocephalus Loxocemus bicolor Eryx johnii Eryx colubrinus Candoia carinata Corallus grenadensis Corallus cookii Corallus hortulanus Corallus ruschenbergerii Corallus annulatus Corallus cropanii Corallus caninus Epicrates cenchria Eunectes murinus Boa constrictor Exiliboa placata Charina bottae Sanzinia madagascariensis Cylindrophis ruffus
0 30 60 90 120 136 Time (MYA)
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