Children (22 direct children, 321 direct and indirect children):
Semibalanus
(tree size 6)
Chirona
(tree size 10)
Conopea
(tree size 34)
Solidobalanus
(tree size 23)
Membranobalanus
(tree size 12)
Armatobalanus
(tree size 13)
Euacasta
(tree size 11)
Hesperibalanus
(tree size 17)
Archiacasta
(tree size 10)
Poratria
(tree size 2)
Bryozobia
(tree size 2)
Pectinoacasta
(tree size 6)
Neoacasta
(tree size 6)
Eoatria
(tree size 3)
Microporatria
(tree size 1)
Multatria
(tree size 4)
Acastinae
(tree size 72)
Hexacreusiinae
(tree size 5)
Semibalaninae
Archaeobalaninae
(tree size 59)
Bryozobiinae
Eoceratoconcha
(tree size 3)