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Palynology of the Panchet group exposed in the nonia nala, near Asansol, W. Bengal

The Sporae dispersae of the Maitur Formation (Panchet Group) exposed in the Nonia Nala, East of Kumarpur, near Asansol comprises 40 genera and 60 species of miospores. The beds just above the Raniganj-Panchet contact have abundance of striate bisaccate pollen as in the underlying Raniganj beds. In the beds farther above the contact, the number of trilete forms gradually increases while the bisaccate pollen decreases in frequency. The characteristic miospore genera of the Maitur Formation are Verrucosisporites, Decisporis, Playfordiaspora (Guthoerlisporites) and Lunatisporites (Taeniaesporites). There is a definite, though insignificant, miofloral change above the Raniganj-Panchet boundary, but whether this change took place in the late Palaeozoic or at the Permian-Triassic boundary is still not clearly known.