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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Eduncle Best Answer
The Gondwana sequence (6000 to 7000 m) of India has been classified into 'Lower Gondwana' (Permian) and 'Upper Gondwana' (Mesozoic) based on flora and fauna following Fox (1931). The Lower Gondwana rocks are characterised by Glossopteris-Gangamopteris flora whereas the Upper Gondwana is characterised by Lepidopteris-Dicrodium and Ptillophyllum flora.