Children (8 direct children, 78 direct and indirect children):
Dawsonellidae
(tree size 1)
Proserpinellidae
(tree size 5)
Proserpinidae
(tree size 6)
Neritiliidae
(tree size 42)
Olygyridae
Despoenidae
Deianiridae
(tree size 7)
Ceresidae
(tree size 9)