The Cretaceous palynofloras and their bearing on stratigraphic correlation in China

Cretaceous strata are widely distributed in China and rich in fossil spores and pollen grains. According to current data, two Cretaceous palynofloras occupy the North China and the South China paleobiogeographic provinces. For each palynoflora an assemblage sequence is proposed and described. The northern flora is composed of six assemblages (in ascending order): 1. Cicatricosisporites australiensis-Fixisporites tortus ; 2. Impardecispora...