First mammal of Gondwanan lineage in the early Eocene of India |
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Authors: | Vivesh V Kapur Debasis P Das Sunil Bajpai Guntupalli VR Prasad |
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Institution: | 1. Birbal Sahni Institute of Palaeosciences, 53, University Road, 226007 Lucknow, Uttar Pradesh, India;2. Shell Technology India Pvt. Ltd., RMZ Centennial Campus B, 8B, Kundanahalli Main Road, 560048 Bangalore, Karnataka, India;3. Department of Geology, University of Delhi, 110007 Delhi, India |
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Abstract: | Based on well-preserved lower dentition, a new adapisoriculid from the Cambay Shale Formation (basal Eocene, ~54.5 Ma) in the open cast lignite mine of Vastan, Gujarat State, western India, is described. Indolestes kalamensis gen. et sp. nov adds significantly to the diversity of basal eutherians from Vastan as it represents a family hitherto not known from the Eocene of the Indian Subcontinent. Phylogenetic analysis suggests that Indolestes is derived relative to Deccanolestes and Afrodon, but primitive relative to the European adapisoriculids Bustylus and Adapisoriculus. The new data from the early Eocene provide evidence for continued survival of a Gondwanan mammal lineage following the Deccan volcanic activity (Cretaceous–Paleogene transition) in the Indian Subcontinent. |
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Keywords: | Adapisoriculidae Cambay Shale Early Eocene Gondwana India Mammal Adapisoriculidés Shale de Cambay Éocène inférieur Gondwana Inde Mammifères |
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