| Autor: |
Valentin A. Krassilov, A. K. Srivastava, Deepa Agnihotri |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Palaeogeography, Palaeoclimatology, Palaeoecology. 310:393-399 |
| ISSN: |
0031-0182 |
| DOI: |
10.1016/j.palaeo.2011.07.030 |
| Popis: |
We report on the first find of peltasperms in the Permian of Gondwana. Well-preserved leaf compressions and reproductive structures of these plants came from the Lower Permian Barakar Formation of Satpura Basin, central India, where they co-occur with diverse glossopterids. The Indian peltasperm record is evidence of floristic exchanges between Laurasia and Gondwana in the Early Permian involving a dominant group of North American–European arboreal vegetation of the time. The phytogeographic differentiation, leaf micromorphology and stratigraphic occurrence of Permian peltasperms suggest a thermophilic group appearing in central India during the transition from humid peat forming to seasonally dry redbed environments. Therefore peltasperms are unlikely invaders to high-latitude cool-temperate zone postulated for Early Permian Australindia. Instead their Satpura occurrence assigns the Indian subcontinent in the equatorial zone of mixed Laurasian/Gondwanan floristic assemblages. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect