Children (35 direct children, 780 direct and indirect children):
Cyphoma
(tree size 27)
Simnia
(tree size 32)
Xandarovula
(tree size 8)
Aclyvolva
(tree size 10)
Calpurnus
(tree size 3)
Dentiovula
(tree size 20)
Diminovula
(tree size 24)
Habuprionovolva
(tree size 5)
Hiatavolva
(tree size 3)
Naviculavolva
(tree size 6)
Procalpurnus
(tree size 3)
Prosimnia
(tree size 9)
Quasisimnia
(tree size 2)
Serratovolva
(tree size 3)
Volva
(tree size 21)
Volva (gastropod)
Neosimnia
(tree size 26)
Pseudocyphoma
(tree size 7)
Spiculata
(tree size 4)
Calcarovula
(tree size 7)
Prionovolvinae
(tree size 187)
Ovulinae
(tree size 163)
Subsimnia
(tree size 2)
Sphaerocypraea
(tree size 2)
Aclyvolvinae
(tree size 3)
Jenneriinae
Simniinae
(tree size 32)
Pediculariinae
(tree size 9)
Pseudocypraeinae
(tree size 33)
Eocypraeinae
(tree size 82)
Habruprionovolva
Taviania
(tree size 4)
Eotrivia
(tree size 8)
Cypraeogemmula
Projenneria
Turbovula