Children (17 direct children, 18 direct and indirect children):
Albertoceras
Barnesoceras
Burenoceras
Clarkoceras
Cyptendoceras
Dakeoceras
Ectenolites
Ellesmeroceras
Eremoceras
Levisoceras
Paleoceras
Paradakeoceras
Quebecoceras
Ruthenoceras
Shantungendoceras
Eburoceras
Annoceras
(tree size 1)