Stratigraphic significance of some angiosperm pollen from the Tinali Oilfield, Upper Assam, India

Abstract

Twelve fossil pollen taxa Polygonacidites frequens, Perfotricolpites neyvelii, Lanagiopollis eocaenicus, Tiliaepollenites cf. rotundus. Tiliaepollenites sp. A. Durgaipollenites galsii, Strobilanthidites cf. africanus, Retitrescolpites africanus, Retitricolporites cf. guianensis, Corsinipollenites jussiaeensis, Discoidites borneensis and tinalipollenites duttae gen. et sp. nov. are described from the Barail Group to Dhekiajuli Formation (mid Tertiary to Quatenary) of the subsurface Tinali area. Upper Assam. The fossil pollens are compared with similar pollen types from extant dicotyledonous species. The geological record and stratigraphic and palaeoecologic significance of the fossil forms are considered in relation to the geographic distribution and habitat of modem taxa with similar pollen.