Меловой период

Savelieva J.N., Feodorova A.A., Shurekova O.V., Arkadiev V.V. (2014) Integrated palaeontological characteristics (ammonites, ostracods, foraminifers, dinocysts) of the Berriasian deposits of Central Crimea // Volumina Jurassica, XII (1): 129-162.
http://cretaceous.ru/files/pub/temp2/sa ... ogical.pdf