Children (42 direct children, 840 direct and indirect children):
Amphipholis
(tree size 62)
Monamphiura
(tree size 10)
Amphiodia
(tree size 72)
Amphiura
(tree size 341)
Ophiocnida
(tree size 19)
Icalia
(tree size 2)
Amphistigma
(tree size 2)
Dougaloplus
(tree size 9)
Ophionema
(tree size 3)
Amphichondrius
(tree size 2)
Ophiostigma
(tree size 10)
Ophiophragmus
(tree size 36)
Amphioplus
(tree size 148)
Paracrocnida
(tree size 3)
Ophionephthys
(tree size 15)
Acrocnida
(tree size 4)
Ophiocentrus
(tree size 22)
Ophiodaphne
(tree size 6)
Nudamphiura
(tree size 1)
Paramphichondrius
(tree size 1)
Paramphiura
(tree size 1)
Microphiopholis
(tree size 6)
Triplodia
(tree size 1)
Xanthamphiura
(tree size 1)
Deckersamphiura
(tree size 2)
Ophiosphaera
(tree size 1)
Nannophiura
(tree size 1)
Amphipholizona
(tree size 2)
Amphioncus
(tree size 1)
Amphiomya
(tree size 1)
Amphicontus
(tree size 1)
Amphigyptis
(tree size 1)
Anamphiura
(tree size 1)
Nullamphiura
(tree size 2)
Pandelia
(tree size 1)
Triodia
(tree size 1)
Amphiurinae
Ophiactininae
Ctenamphiura
(tree size 3)
Ophiopeltis
(tree size 1)
Amphylicus
Silax
(tree size 2)