Children (14 direct children, 108 direct and indirect children):
Halysitidae
(tree size 7)
Syringoporidae
(tree size 2)
Pyrgiidae
(tree size 1)
Pachyporidae
(tree size 11)
Auloporidae
(tree size 2)
Heliolitida
(tree size 12)
Favositida
(tree size 43)
Mirandellidae
Calapoeciinae
Auloporida
(tree size 3)
Lichenariida
(tree size 4)
Sarcinulida
(tree size 7)
Tetradiida
(tree size 2)
Halysitida