Children (14 direct children, 144 direct and indirect children):
Alvariella
(tree size 1)
Orcula
(tree size 32)
Orculella
(tree size 62)
Pilorcula
(tree size 10)
Sphyradium
(tree size 3)
Schileykula
(tree size 20)
Walklea
(tree size 1)
Odontocyclas
(tree size 1)
Odontocycladinae
Orculinae
Mesorculella
Nordsieckula
Pupilorcula
Scyphus