1． Institute of Biology and Soil Science，FEB RAS，Vladivostok 690022，Russia; 2． Institute of Geosciences，University of Tuebingen，Tuebingen 72074，Germany; 3． Key-Lab for Evolution of Past Life，MOEC，( Jilin University) ，Changchun 130026，China; 4． College of Paleontology，Shenyang Normal University，Shenyang 110034，China

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．