Permian megaspores from Kuraloi Area,Ib-River coalfield,Mahanadi Basin,Orissa |
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| Authors: | Rajni Tewari Naresh C Mehrotra K L Meena S S K Pillai |
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| Institution: | (1) National Laboratory of Genomics for Biodiversity, Cinvestav Campus Guanajuato, Km 9.6 Libramiento Norte Carretera Irapuato-Leon, CP36500 Irapuato, Guanajato, Mexico; |
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| Abstract: | Heterogenous megaspores recovered from the Upper Permian sediments of Kuraloi Area, Ib-River coalfield, have been systematically
described. The megaspore assemblage includes seven genera with seventeen species viz. Bokarosporites rotundus, Banksisporites indicus, B. utkalensis, Biharisporites spinosus, Biharisporites sp.A, Biharisporites sp.B, Jhariatriletes baculosus, J. srivastavae, J. damudicus, Manumisporites distinctus, Singhisporites baculatus, S. radialis,
S. surangei, Ramispinatispora indica, R. nautiyalii and Ramispinatispora sp. Additionally, a new species of Ramispinatispora viz. R.mahanadiensis has been identified. Associated spore pollen assemblages are suggestive of a Late Permian age corresponding to Raniganj/Kamthi
Formation. Raniganj megaspores are known from Damodar and Godavari Basins. The newly recorded megaspore assemblage from the
Ib-River coalfield is comparable to that of Raniganj/Kamthi Formation of Godavari Graben. The diversity in exosporium ornamentations
indicates structural diversity. Moreover, their prolific presence ultimately points towards occurrence of heterosporous source
vegetation in the area. |
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