Occurrence of palynofossils from the Tirap River section (Disang Group), Tinsukia District, Assam

Abstract

Disang shale exposed on the Tirap River section yielded 23 genera and 24 species of palynomorphs. The palynoassemblage is dominated by pteridophytic spores and angiospermic pollen grains, whereas gymnospermic elements are rare. The presence of Striatriletes, Polypodiisporites, Schizaeoisporites, Striacolporites, Lakiapollis, Tricolpopollenites, Phragmothyrites and Inapertisporites suggests an Eocene age to the assemblage.