Annual Report 2011-2012 - Birbal Sahni Institute of Palaeobotany

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EBIRBAL SAHNI INSTITUT OF PALAEOBOTANY 1946 Annual Report 2011-2012 Distinguished Visitors Dr. Shailesh Nayak, Secretary, Ministry of Earth Sciences, Govt. of India, New Delhi Prof. M.S. Swaminathan, FRS, Chairman, MS Swaminathan Foundation Research Center, Chennai Dr. P.K.K. Nair, Director, ERRC, Thiruvananthapuram Dr. S.L. Chopra, Vice Chancellor, University of Petroleum and Energy Studies, Dehradun Dr. Sankar Chatterjee, Curator of Paleontology, Texas Tech University, Lubbock, Texas (USA) Dr. Akhilesh Gupta, Head, Climate Change Programme, DST, New Delhi Prof. Robert A. Spicer, Open University, Milton Keynes, UK Prof. Cheng-Sen Li, Institute of Botany, Beijing, China Shri Rasik Ravindra, Director, National Center for Antarctic and Ocean Research, Goa Prof. David L. Dilcher, Indiana University, Bloomington, USA Prof. V.N. Sergeev, Geological Institute, Russian Academy of Sciences, Moscow, Russia Dr. S.V. Naugolnykh, Geological Institute, Russian Academy of Sciences, Moscow, Russia Dr. Vikram Singh, Vice Chancellor, Noida International University, Gautam Buddh Nagar (UP) Shri Rajnandan Kumar, Audit Officer, C.A.G., New Delhi Shri Pankaj Srivastava, IFS, Chief Conservator of Forest, R/E Indore, MP Shri Shreekanta Kabi, IAS, Secretary, BDA, BBSR, Odisha Dr. Chris Mays, School of Geosciences, Monash University, Victoria, Australia Prof. Yu-Fei Wang, Institute of Botany, Beijing, China Shri Prem Singh, Joint Director (Official Language), Ministry of Science & Technology, New Delhi 8 www.bsip.res.in
EBIRBAL SAHNI INSTITUT Annual Report 2011-2012 Research Thrust areas and Projects 1946 OF PALAEOBOTANY Thrust Area: Project 1.1: EARLY LIFE, ATMOSPHERE AND OCEANS: EVIDENCES FROM INDIAN CRATON (Bio-Geosphere interactions in the Precambrian) Precambrian Palaeobiology Group Palaeobiology of the Neoproterozoic Marwar Supergroup and the Bhander Group of Vindhyan Supergroup: Biostratigraphical correlation The trace-fossils collected from the siliciclastic sequence of Nagaur Formation of the Marwar Supergroup have been processed for description. These include (in order of abundance) Cruziana, Rusophycus, Palaeophycus, Dimorphicnus, Monomorphicnus, Planolites, Bergaueria and varied arthropod scratch marks. Absence of true body fossils of trilobite and small shelly fossils in the sequence put a constraint of fine division of the Nagaur Group. The study provides definitive evidence of the Cambrian succession for hitherto suggestive Precambrian-Cambrian sequence in peninsular India. Fresh investigations of the siliciclastic sequence of the Sonia Sandstone of the Jodhpur Group have shown the presence of cluster of circular structures on the top surface of the bedding plane. A large collection has been made from the Artiyan Kalan locality of Jodhpur. At present the fossil assemblage of Marwar Supergroup indicate that entire sequence range from Pre-ediacara- Ediacara-Early Cambrian in age. Samples from Bilara Group have been collected for microfossils studies in thin section and maceration studies. Mukund Sharma, Yogmaya Shukla & S.K. Pandey A field-visit has been undertaken with Mr. Deepak Singh and Mr. Uday Bhan of the University of Petroleum Marsonia artiyansis from the Sonia Sandstone Formation, Marwar Supergroup and Energy Studies, Dehradun for validation of data of the Ph.D. problem. A set of systematic samples are collected from Semri and Bhander Groups of the Vindhyan sections exposed in Maihar area in Satna district (MP), central India. Field-work have been carried out in the Vindhyan Supergroup in an around Rewa-Satna-Katni districts of MP. Also carried out the field work in the Marwar Supergroup in an around Jodhpur-Nagaur- Bikaner-Jaisalmer districts of Rajasthan. Mukund Sharma & S.K. Pandey Project 1.2: Tracing the palaeobiological entities from the eastern part of Chhattisgarh Basin with geologic implications Studied the biotic communities from the samples belonging to Singhora and Raipur groups of Chhattisgarh Supergroup collected from the outcrops exposed in various localities in Raigarh district to understand the significance and evolutionary status of varied palaeobiotic communities (micro-macrofossils and organo-sedimentary structures viz. stromatolites) preserved in variety of sedimentary rocks. Structurally, three/two dimensional, cellularly preserved microbiota (prokaryotes & eukaryotes both) comprising 12 genera of acritarchs and 4 genera of cyanobacterial remains from the macerated residue of black carbonaceous shale belong to the lower Saradih Formation, the youngest carbonate horizon of the Raipur Group exposed on the right bank of Mahanadi River at www.bsip.res.in 9
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Annual Report 2011-2012 - Birbal Sahni Institute of Palaeobotany

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