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Grigorjeva, 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.
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