†Parajanthina Tomida & Itoigawa 1982

Tomida & Itoigawa 1982. Parajanthina japonica, gen. et sp. nov., and its related species of fossil janthinid gastropod from the Pliocene Formation in Totomi District, central Japan. Bulletin of the Mizunami Fossil Museum, 9, December 1982: 59-64