Children (18 direct children, 88 direct and indirect children):
Bostrychoceras
(tree size 1)
Nipponites
Ainoceras
Anaklinoceras
(tree size 2)
Axonoceras
(tree size 1)
Helicoceras
(tree size 5)
Eubostrychoceras
Exiteloceras
(tree size 2)
Muramotoceras
Nostoceras
(tree size 29)
Pravitoceras
(tree size 1)
Didymoceras
(tree size 23)
Emperoceras
(tree size 2)
Didymoceratoides
Hyphantoceras
(tree size 2)
Jouaniceras
(tree size 1)
Morewites
(tree size 1)
Cirroceras