NEW DATA ON COMPOSITION AND AGE OF MALOMIKHAILOVKA FLORA FROM THE UPPER CRETACEOUS OF THE AMUR RIVER LOWER COURSES

Abstract

The described flora is studied near the village of Malomikhailovka, where it is confined to synonymous formation of an intermontane depression at the northern end of the Sikhote Alin volcanic belt. In its dominant taxa and in the composition of plant groupings, the studied flora notably differs from the coeval Tsagayan flora of the Zeya-Bureya depression and from floras occurring in western Sakhalin and eastern Sikhote Alin. It includes a new genus, Amurocyparis, with type species A. sokoloviae, as well as Larix puerensis sp. nov., Cryptomerites tutshkovii sp. nov., Corylites amurensis sp. nov., and Palaeocarpinus pacifica sp. nov., which are described here. The latter taxon was discovered for the first time in Russia.