Children (8 direct children, 69 direct and indirect children):
Helicodiscus
(tree size 35)
Egestula
(tree size 7)
Lucilla
(tree size 7)
Lucilla (gastropod)
Zilchogyra
(tree size 10)
Hydrophrea
(tree size 1)
Helicodiscinae
(tree size 1)
Stenopylinae
Hebetodiscus