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      https://www.ias.ac.in/article/fulltext/jess/123/06/1433-1438

    • Keywords

       

      Cyathea siwalika; fern axis; leaf and root scars; Plio–Pleistocene; Arunachal Pradesh.

    • Abstract

       

      A part of the compressed tree fern axis with leaf and adventitious root scars in unusual arrangement from Plio–Pleistocene sediments of Arunachal Pradesh, India is described as Cyathea siwalika sp. nov. This record suggests that Cyathea was an important component of tropical evergreen forest in the area during the Plio–Pleistocene and this group subsequently declined in importance within the local vegetation.

    • Author Affiliations

       

      Subir Bera1 Sudha Gupta2 Mahasin Ali Khan1 Aniruddha De1 Radhanath Mukhopadhyay3

      1. Centre of Advanced Study, Department of Botany, University of Calcutta, 35, B.C. Road, Kolkata 700 019, West Bengal, India.
      2. Department of Botany, University of Kalayni, Nadia 741 235, West Bengal, India.
      3. Department of Botany, University of Burdwan, Burdwan 713 104, West Bengal, India.

    • Dates

       
      Published
      August 2014
      Manuscript received
      19 November 2013
      Manuscript revised
      28 March 2014
      Accepted
      9 April 2014

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