Palynostratigraphy and Paleovegetation Reconstruction of Late Jurassic Continental Basins

Palynostratigraphy has emerged as a vital tool in understanding the age, depositional history, and paleoenvironmental conditions of continental sedimentary basins. The Late Jurassic period represents a crucial phase of terrestrial ecosystem evolution marked by significant floral diversification and climatic fluctuations. This study examines palynomorph assemblages recovered from Late Jurassic continental basins to establish a refined biostratigraphic framework and reconstruct paleovegetation patterns. Detailed analysis of spores, pollen grains, and other organic microfossils reveals the dominance of gymnospermous taxa, including conifers, cycads, and bennettitaleans, along with abundant fern spores indicative of humid, warm climatic conditions. Variations in palynomorph diversity and abundance reflect shifts in hydrological regimes and basin dynamics. The integration of palynological data with sedimentological evidence provides insights into vegetation structure, paleoecology, and paleoclimatic conditions prevailing during the Late Jurassic. The findings contribute to improved regional stratigraphic correlation and enhance understanding of terrestrial ecosystem responses to Jurassic climatic transitions.