Children (13 direct children, 1397 direct and indirect children):
Bohaispiridae
(tree size 9)
Littorinidae
(tree size 683)
Pomatiidae
(tree size 373)
Pickworthiidae
(tree size 99)
Prolacuna
(tree size 2)
Purpurinidae
(tree size 9)
Tripartellidae
Annulariidae
(tree size 207)
Leviathaniidae
Purpuroideidae
Lacunidae
Pomatiasidae
(tree size 2)
Chondropomatidae