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Swiss Journal of Palaeontology
Fig. 4 | Swiss Journal of Palaeontology

Fig. 4

From: The Callovian and Late Jurassic ammonite-based chronostratigraphy of West Siberia: important findings, biostratigraphic review, and basin correlation West Siberia-South England

Fig. 4

The ammonite zonation of the Kimmeridgian and Volgian stages. Zonal succession established by authors (right column) and another one used by Russian geological services (Nesterov 2004; left column). North-West European zonation and its correlation with the West Siberian one is shown according to Ogg and Hinnov (2012); Rogov and Zakharov (2009) and Mesezhnikov (1984)

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