Children (15 direct children, 16 direct and indirect children):
Anoploceras
Cooperoceras
Encoiloceras
Enoploceras
Germanonautilus
Hexagonites
Holconautilus
Metacoceras
Pleuronautilus
(tree size 1)
Tainionautilus
Tainoceras
Thuringionautilus
Tylonautilus
Trachynautilus
Sibyllonautilus