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A new extinct genus of arborescent angiosperms, Tasymia gen. nov., is described from the Turonian deposits of the upper part of the Simonovo Formation on the Kas River (left-bank tributary of the Yenisei River, Krasnoyarsk Region). The epidermal characters of leaves of the new genus testify to its platanaceous affinity. A comparison with other extinct taxa of the Platanaceae from the Chulym-Yenisei Depression and other regions of the Northern Hemisphere is accomplished.
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Lina B. Golovneva (2008) studied this question.
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