New Data on the Litho- and Biostratigraphy of the J/K Boundary Interval of the Lower Reaches of the

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New data on the litho- and biostratigraphy of the Jurassic/Cretaceous (J/K) boundary interval of the lower reaches of the Lena river, at the Cape Chekurovka and Cape Chucha, are presented. Volgian-Valanginian interval of the Chekurovka section is represen
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