Children (7 direct children, 228 direct and indirect children):
Polyzoniidae
(tree size 105)
Hirudisomatidae
(tree size 40)
Siphonotidae
(tree size 71)
Siphonothinus
(tree size 1)
Saraminozonium
(tree size 1)
Kiusiozoniidae
(tree size 3)
Polyzoniidea