Genus

Ringoceras Strand, 1934

List of species
Luokittelu
Organism groupBiota
KingdomAnimalia
PhylumMollusca
ClassCephalopoda
SubclassOrthoceratia
OrderOrthocerida
FamilyKionoceratidae
GenusKionoceras
Polygrammoceras
Ringoceras
Speciespraecurvum