Children (12 direct children, 15 direct and indirect children):
Volutoconus bednalli
Volutoconus grossi
(tree size 2)
Volutoconus hargreavesi
(tree size 1)
Volutoconus coniformis
Volutoconus daisyae
Volutoconus calcarelliformis
Volutoconus multiformis
Volutoconus keppelensis
Volutoconus browni
Volutoconus mcmichaeli
Volutoconus ralphi
Volutoconus vetulus