Children (34 direct children, 1489 direct and indirect children):
Eudendriidae
(tree size 102)
Australomedusidae
(tree size 12)
Bougainvilliidae
(tree size 201)
Bythotiaridae
(tree size 57)
Cytaeididae
(tree size 32)
Magapiidae
(tree size 9)
Stylasteridae
(tree size 516)
Oceaniidae
(tree size 54)
Oceanidae
Pandeidae
(tree size 161)
Hydractiniidae
(tree size 226)
Proboscidactylidae
(tree size 16)
Protiaridae
(tree size 11)
Ptilocodiidae
(tree size 20)
Rathkeidae
(tree size 16)
Brinckmannia
(tree size 1)
Hydrichthyidae
Margelina
Lymnorea
(tree size 2)
Balellidae
(tree size 2)
Trichydridae
(tree size 3)
Cordylophoridae
Eucodoniidae
Niobiidae
Heterotentaculidae
(tree size 2)
Jeanbouilloniidae
(tree size 2)
Axoporidae
(tree size 9)
Kinetocodium
(tree size 1)
Bougainvillioidea
Clavoidea
Hydractinoidea
Pandeoidea
Rathkeoidea
Favonia
Halerella