Children (28 direct children, 476 direct and indirect children):
Bothrocophias
(tree size 6)
Sistrurus
(tree size 9)
Crotalus
(tree size 105)
Bothrops
(tree size 73)
Lanceheads
Tropidolaemus
(tree size 5)
Atropoides
(tree size 7)
Metlapilcoatlus
Lachesis
(tree size 19)
Lachesis (genus)
Cerrophidion
(tree size 6)
Bothriechis
(tree size 13)
Agkistrodon
(tree size 24)
Moccasins
Bothriopsis
(tree size 5)
Forest vipers
Porthidium
(tree size 9)
Hognose pit vipers
Ophryacus
(tree size 4)
Ovophis
(tree size 8)
Gloydius
(tree size 31)
Trimeresurus
(tree size 85)
Mixcoatlus
(tree size 3)
Hypnale
(tree size 4)
Protobothrops
(tree size 15)
Bothropoides
Rhinocerophis
(tree size 1)
Parias
(tree size 3)
Popeia
(tree size 6)
Calloselasma
(tree size 3)
Malayan pit viper
Deinagkistrodon
(tree size 1)
Chinese moccasin
Garthius
(tree size 1)
Sinovipera
(tree size 1)
Mopanveldophis
(tree size 1)