Children (5 direct children, 1834 direct and indirect children):
Palaeacanthocephala
(tree size 1212)
Archiacanthocephala
(tree size 223)
Archiacanthocephalans
Eoacanthocephala
(tree size 377)
Polyacanthocephala
(tree size 7)
Zhijinitidae
(tree size 10)