Palaeobotany of Gondwana basins of Orissa State,India: A bird's eye view |
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| Affiliation: | 1. Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria 3086, Australia;2. Department of Ecology, Environment and Evolution, La Trobe University, Bundoora, Victoria 3086, Australia;1. Birbal Sahni Institute of Palaeosciences, 53 University Road, Lucknow 226007, India;2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India;3. Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, 60325 Frankfurt am Main, Germany;4. Programa de Pós-Graduaçãoem Ambientee Desenvolvimento, Universidadedo Vale do Taquari – Univates, AvenidaAvelino Talini 171, 95914-014 Lajeado, Rio Grande do Sul, Brazil;5. Department of Botany, University of Lucknow, Lucknow, Uttar Pradesh 226007, India;6. M.P. Singh Lab of Coal and Organic Petrology, CAS in Geology, Banaras Hindu University, Varanasi 221005, India |
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| Abstract: | Gondwana basins of Orissa State constitute a major part of the Mahanadi Master Basin. These Gondwana sediments, ranging from Asselian to Albian in age, contain remnants of three basic floral assemblages i.e. Glossopteris Assemblage, Dicroidium Assemblage and Ptilophyllum Assemblage which can be recognized through the Permian, Triassic and Early Cretaceous, respectively. The megafloral assemblages of different basins of this state are discussed briefly. This report mainly deals with the plant species diversification in different lithological formations and the development of flora in the Gondwana basins of Orissa. A number of successive megafloras are recognized. Among those, leaves are the dominant part of the preserved flora, followed by fruits and roots. No wood parts are preserved in the major basins. These pre-angiospermic floras have been systematically analyzed to depict the evolutionary trends, and palaeofloristics of these basins. The distribution of plant fossils in different formations of these basins depicts provincialism in Gondwana flora within the Orissa. |
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