Children (12 direct children, 12 direct and indirect children):
Calycoceras asiaticum
Calycoceras cenomanense
Calycoceras naviculare
Calycoceras diabloense
Calycoceras besairieri
Calycoceras picteti
Calycoceras obrieni
Calycoceras auspicum
Calycoceras annulatum
Calycoceras orientale
Calycoceras stoliczkai
Calycoceras planecostatum