The age of the Tiki Formation in the South Rewa Gondwana Basin has been discussed. Available data on the vertebrate fauna, megaflora and palynoflora of the Tiki Formation have been evaluated. It is concluded that the Tiki Formation sensu lato (i.e. including the Nidhpuri beds) ranges in age from Anisian through Norian and possibly extends into the Rhaetian. On the basis of available palynological data an attempt has been made to establish the miofloral succession in the Triassic Gondwanas of India. Presently nine successive palynological zones have been recognized. However, possibility of existence of some more palynological zones is also not ruled out.

Three new species of Elatocladus (viz., E. pseudotenerrima, E. sehoraensis and E. bosei). and two new species of Pagiophyllum (viz., P. sherensis and P. satpuraensis) are described from the Jabalpur Group exposed in the Sher River near Sehora, District Narsinghpur, Madhya Pradesh. All these species are based upon their epidermal as well as morphological features.

Twenty-one different types of megaspores belonging to 10 genera are recorded from the plant-bearing bed in the upper part of the Tiki Formation exposed in a stream section in Bijouri-Harai area, Shahdol District, Madhya Pradesh (South Rewa Gondwana Basin). Five species are new. The genus Banksisporites Dettmann has been emended and enlarged. On the basis of megaspore study an Upper Triassic age for the plant-bed of the Tiki Formation is supported.

The palynostratigraphy of the Nkporo Shale outcrop exposed at 84 km point along the Enugu-Umahia Express Way indicates a Late Campanian-Early Maastrichtian age. The spore-pollen/dinocysts ratio in the assemblage is suggestive of a brackish swamp (mangrove) environment of deposition. The relative abundance and dominance of marshy pteridophytes and palm pollen suggest the prevalence of humid tropical climate during the deposition of the Nkporo Shale.

Integrated floral and faunal (foraminiferal) data permit a precise interpretation of the age and depositional environment of the outcrop section exposed along the Calabar-Itu at 42.5 km point. The outcrop section belongs to the Nkporo Shale of the Calabar Flank from which Ariadnaesporiles nigeriensis Obebode & Skarby was reported and described. The results obtained indicate an Early Maastrichtian age and deposition in a brackish swamp environment. the biostratigraphic and environmental significance of Salviniaceous fossils have been consequently assessed.