Children (10 direct children, 277 direct and indirect children):
Ancyloceratidae
(tree size 95)
Crioceratitidae
(tree size 75)
Crioceratidae
(tree size 4)
Acrioceratidae
(tree size 5)
Hemihoplitidae
(tree size 11)
Heteroceratidae
(tree size 9)
Helicancylidae
(tree size 1)
Labeceratidae
(tree size 34)
Leptoceratoididae
(tree size 24)
Himantoceratidae
(tree size 9)