Children (13 direct children, 13 direct and indirect children):
Helcion pectinata
Helcion concolor
Helcion dunkeri
Helcion pectunculus
Helcion pruinosus
Helcion pellucidus
Helcion tella
Helcion (helcion)
Patinastra
Helcion valleti
Helcion valfinensis
Helcion thurmanni
Helcion pellucidum