He worked along with archaeologists in pioneering studies of agricultural crops in early human settlements on the Indian Subcontinent.
He then joined the Birbal Sahni Institute of Paleobotany in Lucknow and studied Mesozoic plants.
He was deputed to Emmanuel College, Cambridge University from where he received a Ph.D. in 1960 after working under Sir Harry Godwin on Quaternary palynology.
[2] Among his researches were studies of pollen at archaeological sites to gain an understanding on agriculture and the usage of plant materials in the past.
[4] The samples were re-examined by others in 1979 and the identification was found to be incorrect, in fact the suggestion was that the grain did not even match that of a monocot.