2005  Nikolaeva & Bogoslovskii: 35, text-fig.10, bed 10-15. Locality of Zharnaarkinsk region, at right bank of
               Sherubai-Nuga River, SW of village Dzhalair, NW of village Dzhartas. 5-6 km to the E: red and grey
               cephalopod limestones with many ammonoids.
     2007  Nikolaeva, 337, outcrop 4, sample 4b.