Dr. A. K. Ghosh is presently working as Scientist ‘E’ at Birbal Sahni Institute of Palaeosciences loacted at Lucknow, India. After receiving the Ph. D. Degree in Botany in the year 1992 on the topic “Contributions to the Triassic Palaeobotany and Stratigraphy of Peninsular India”, worked as a Research Associate of CSIR. After joining Birbal Sahni Institute of Palaeobotany (BSIP) as a Junior Scientific Officer in the year 1994, the research contributions are specifically focused on the studies of fossil calcareous algae from the Phanerozoic sediments of India. Significant contributions have been made on the morphology, biostratigraphy, palaeoecology and palaeobathymetry of fossil calcareous algae from different sedimentary basins of India and abroad namely from the Ordovician of Spiti, Cretaceous of Mussourie Syncline, Cretaceous and Palaeocene of Cauvery Basin, Palaeocene and Eocene successions of South Shillong (Meghalaya), Oligocene of southwestern Kutch, Middle Miocene of Little Andaman Island, Middle Pliocene of Car Nicobar Island, and also from the Early Oligocene of NE Libya. The results and interpretations of the contributions have been published in various Peer Reviewed National and International journals having impact factors. Research work also has been carried out on the studies of plant megafossils and palynomorphs (both miospores and megaspores) from the Palaeozoic and Mesozoic sediments of India namely from the Damodar Valley Basin, Mahanadi valley Basin and Rajmahal Basin. Interesting and significant data have been generated and the results and interpretations have been published in various Peer Reviewed National and International journals. As recognition of significant research contributions received several awards in the Institute and also worked as a Visiting Scientist in the Institute of Geosciences, University of Tübingen, Germany after availing International Exchange Programme between INSA (Indian National Science Academy) and DFG (German Science Foundation). Recently he was nominated by IODP (MOES) India (Funded by IODP, US Implementing Organization and NSF, USA) and worked as a Shipboard Scientist in the IODP Expedition 342 (Newfoundland, Canada).

Marine Micropalaeontlogy with special reference to Cretaceous and Tertiary Calcareous Algae, their diversity, taphonomy, palaeoenvironment and facies analysis. Mesozoic Palaeobotany, Biostratigraphy and Palaeoecology.