Children (7 direct children, 432 direct and indirect children):
Byrsophlebidae
(tree size 26)
Promesostomidae
(tree size 143)
Solenopharyngidae
(tree size 48)
Trigonostomidae
(tree size 203)
Ciliopharyngiellidae
(tree size 3)
Ventrociliella
(tree size 1)
Micropalaeosoma
(tree size 1)