Grigorjeva 1975Grigorjeva, A.I., 1975. Upper Cretaceous and Paleogene radiolarians from eastern slope of the Urals and Zauralie (Trans-Urals). In: New Paleozoic and Mesozoic miospores, foraminifers, ostracods and conodonts of the Urals. Transactions of Institute of Geology and Geochemistry of Uralian Scientific Center of USSR Academy of Sciences. 119: 102-109, one plate (in Russian).
Acknowledgement to E.O. Amon for doing the scanning.