It was conducted the comparison of palynological assemblages of the Middle Tsagayan��Upper Tsagayan subformations��Furao and Wuyun formations from Zeya-Bureya Basin of Amur ( Heilongjiang) River region with assemblages obtained from the marine deposits of Northeast Russia��Sakhalin��Kuril��and Hokkaido Islands��dated by ammonites��foraminifers and other invertebrates�� Based on detail correlation��the geological age of the terrestrial beds was defined�� The guide fossils are recognized Marsypiletes cretacea��Tricolpites variexinus�� Aquilapollenites conatus��A�� stelkii��A�� rombicus��Integricorpus bellum��Pseudointegricorpus clarireticulatus�� Triprojectus amoenus��Orbiculapollis lucidus��Wodehouseia aspera��Quercoidites minor��which had last occurrence in the late Maastrichtian�� The Danian palynofloras usually are dominated by Triatriopollenites plicoides and T�� confusus�� The species Anacolosidites subtrudens��Aquilapollenites proceros��A�� spinulosus have last occurrence in the Danian�� The K-T ( K-Pg) boundary in the terrestrial deposits is defined in the base of the Upper Tsagayan Subformation and the base of the lower part of the Wuyun Formation�� The latter is represented by aleuropelite to fine-grained sandstones�� The change of taxonomical composition of palynospectra in similar environments could be determined by real change of flora at the Mesozoic and Cenozoic boundary��but not by changes of lithological facies or depositional environment��generally��