Provincial division of the Asian part of the Siberian-Canadian paleofloristic region in the Late Cretaceous |
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Authors: | L B Golovneva |
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Institution: | 1. Komarov Botanical Institute, Russian Academy of Sciences, St. Petersburg, Russia
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Abstract: | The following provinces are recognized in the Late Cretaceous within the Asian part of the Siberian-Canadian paleofloristic region: Chulym-Yenisei, Lena-Vilyui, North Siberian, Verkhoyansk, Mountain Okhotsk-Chukotka, Anadyr’, Amur, Sikhote-Alin, and Sakhalin-Japanese. It is proposed to consider the Central Asian (Turan) Province as belonging to the Euro-Sinian paleofloristic region. In the Cenomanian, the province also included the area of the southern Chulym-Yenisei Depression. In the maritime and northern provinces, a considerable occurrence of Mesozoic relics compared to the southern and continental ones is recorded. Similarity and distinctions between the floras of different provinces varied during the Late Cretaceous. Climatic conditions played a considerable role in species diversity and degree of differentiation or unification of the floras. |
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