Vol. 28, No. 5, 2020

Stratigraphy and Geological Correlation

Provenance and U–Pb Age of Detrital Zircons from the Upper Proterozoic Deposits of the Polar Urals: To the Question of the Time of Formation of the Timan Passive Margin

A. M. Pystin, N. S. Ulyasheva, Yu. I. Pystina and O. V. Grakova p. 457 abstract

The C, O, and Sr Isotope Chemostratigraphy of the Vendian (Ediacaran)–Cambrian Transition, Olekma River, Western Slope of the Aldan Shield

B. G. Pokrovsky, M. I. Bujakaite, O. L. Petrov and A. A. Kolesnikova p. 479 abstract

The Upper Callovian Ammonites Cardioceratidae from Northern Siberia

A. S. Alifirov and V. G. Knyazev p. 493 abstract

Chingandzha Paleoflora and Age of Cretaceous Volcanites of the Balygychan and Sugoy Interfluve and Adjoining Part of Okhotsk–Kolyma Watershed

S. V. Shczepetov and D. A. Yudova p. 514 abstract

Campanian–Maastrichtian Radiolarians from Terranes of the Koryak Highland, Northeastern Russia

T. N. Palechek p. 529 abstract

Mollusks in the Stratigraphic Subdivision of the Cenozoic Key Section at Kvachina Bay, West Kamchatka

Yu. B. Gladenkov p. 557 abstract

Discussion

Comments on the “Debatable Aspects of Initial Human Colonization of Siberia and Age of the Karama Site in the Altai Mountains” by V. S. Zykin, V. S. Zykina, and L. G. Smolyaninova

Ya. V. Kuzmin and A. Yu. Kazanskii p. 567 abstract

Contents

Stratigraphy and Geological Correlation

Discussion