Children (15 direct children, 21 direct and indirect children):
Volva volva
(tree size 5)
Elongate egg cowrie
Volva cumulata
Volva kilburni
Volva habei
Volva striata
Volva acicularis
Volva adamsii
Volva birostris
Volva brevirostris
(tree size 1)
Volva brunneiterma
Volva carpenteri
Volva haynesi
Volva lemurica
Volva longirostrata
Volva sowerbyana