Children (22 direct children, 998 direct and indirect children):
Aspidoceratidae
(tree size 126)
Pachyceratidae
(tree size 20)
Perisphinctidae
(tree size 192)
Neocomitidae
(tree size 191)
Olcostephanitidae
(tree size 1)
Perkinsonidae
Olcostephanidae
(tree size 75)
Oosterellidae
(tree size 10)
Aulacostephanidae
(tree size 61)
Ataxioceratidae
(tree size 33)
Parkinsoniidae
(tree size 16)
Reineckeiidae
(tree size 45)
Berriasellidae
(tree size 4)
Craspeditidae
(tree size 8)
Polyptychitidae
(tree size 111)
Aulicostephanidae
(tree size 3)
Himalayitidae
(tree size 55)
Morphoceratidae
(tree size 16)
Simoceratidae
(tree size 3)
Reinceckeiidae
(tree size 1)
Platylenticeratidae
(tree size 3)
Lithacoceratidae
(tree size 2)