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Vipera ursinii ursinii Vipera ursinii macrops Vipera ursinii rakosiensis Vipera ursinii moldavica Vipera renardi Vipera renardi parursinii Vipera lotievi Vipera eriwanensis Vipera eriwanensis ebneri Vipera ursinii graeca Vipera kaznakovi Vipera berus Vipera seoanei
0 1.35 2.70 4.05 5 Time (MYA)
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