†Eoptychitoides Waterhouse 1996

Waterhouse 1996. The early and middle Triassic ammonoid succession of the Himalayas in western and central Nepal. Part 3. Late Middle Scythian ammonoids. Palaeontographica Abteilung A Palaeozoologie-Stratigraphie, 241(4-6), November 1996: 101-167