Children (16 direct children, 492 direct and indirect children):
Amaltheidae
(tree size 25)
Coeloceratidae
(tree size 37)
Eoderoceratidae
(tree size 92)
Liparoceratidae
(tree size 65)
Phricodoceratidae
(tree size 30)
Polymorphitidae
(tree size 95)
Dactylioceratidae
(tree size 131)
Xipheroceratidae
Hemimicroceratidae
Deroceratidae
Microceratidae
Dubariceratidae
(tree size 1)
Pimelitidae
Epideroceratidae
Paltopleuroceratidae
Villaniinae