Palaeobotany of Gondwana basins of Orissa State, India: A bird's eye view

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 reco...

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Published inJournal of Asian earth sciences Vol. 28; no. 4; pp. 218 - 233
Main Authors Goswami, Shreerup, Singh, Kamal Jeet, Chandra, Shaila
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 15.12.2006
Subjects
Dicroidium
Glossopteris
Mahanadi Basin
Ptilophyllum
Glossopteris
Ptilophyllum
Dicroidium
Mahanadi Basin
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Summary: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.
ISSN:1367-9120
1878-5786
DOI:10.1016/j.jseaes.2005.09.010