| Autor: |
Saxena, Anju, Khan, Md Merajuddin, Raychowdhury, Nilasree, Singh, K J |
| Předmět: |
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| Zdroj: |
Journal of Earth System Science; Jun2022, Vol. 131 Issue 2, p1-19, 19p |
| Abstrakt: |
The flora of Early Permian Talchir Formation is very significant as it holds evidence for the appearance of altogether new flora, the 'Glossopteris flora'. This study contributes to our current understanding of Talchir flora. It also reveals a poor diversity of macrofloral assemblage recorded from the Lower Permian sediments of non-coaliferous Talchir Formation from Singrauli coalfield, Son–Mahanadi valley basin. Recovered plant assemblage is characterised by the occurrence of mostly leaf forms namely, Cordaitales (Euryphyllum), Glossopteridales (Gangamopteris, Palaeovittaria and Cordaicarpus) and Coniferales (Paranocladus) along with stem casts/impressions. Flora is marked with the abundance of the genus Gangamopteris with five species, followed by genus Euryphyllum with four species. The present macroflora is broadly similar to other known contemporaneous floral records of India and other Gondwanan continents but the lack of the genus Noeggerathiopsis in the present assemblage makes it distinct. Genera Euryphyllum (E. elongatum, E. obovatum and E. whittianum) and Palaeovittaria (P. kurtzii) along with taxon Gangamopteris rajaensis, are being reported for the first time from the Talchir Formation of India. Based on the present macrofloral records, the studied sediments have been corroborated to be of Early Permian (Sakmarian) age when the climate was still cold. Research highlights: Euryphyllum, Palaeovittaria and taxon Gangamopteris rajaensis are reported for the first time from Talchir Formation of India. Insightful interpretation of Early Permian (Sakmarian) megaflora of Talchir Formation from Singrauli basin and its distribution in other Gondwana basins of India. The flora is co-relatable with the 'middle floristic zone' of Talchir flora when the climate was still cold, though not harsh. Represents correlation of Talchir flora of India with contemporaneous flora of other Gondwana continents. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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