1986  Chediya et al., p.29, fig.1, Kuberganda stage type section, at right side of the Kuberganda valley.
               Ammonoids from bed 10, grey thin-bedded claystone, bed 12, grey marls, bed 19, dark-grey marls,
              bed 31, grey marls and limestones. Ammonoids not described from single beds, only general
              indication as Kuberganda stage.