The present investigation highlights the palynological significance of the Neyveli lignite Formation Tamil Nadu, India. The palynological assemblage consists of fungal bodies, pteridophytic spores and angiospermic pollen grains and cuticle of angiosperms. The angiospermic pollen grains are referred to Meliapollis firmus, M. iratus, M. navalei, M. quadrangularis, M. ramanujamii, M. tamilii, Tamilipollenites robustus, Grevilloideaepites eocenicus Biswas, Margocolporites tsukadae, Palaeocasalpiniacipites eocenica. The pteridophytic spores are referred to Gleicheniidites indicus, Cyathidites minor. The dominant pollen grains are referred to Meliapollis. The palynomorphs in the present assemblage are compared with pollen and spores of the modern taxa. The distribution of the palynomorphs represented by the fossil assemblage suggests a tropical and subtropical warm and humid climate with high rainfall.

Keywords: Neyveli formation, Palynology, Tertiary, Pollens and Spores