• Endemism due to climate change: Evidence from Poeciloneuron Bedd. (Clusiaceae) leaf fossil from Assam, India

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    • Keywords


      Climate change; Clusiaceae; leaf; Makum Coalfield; Tikak Parbat Formation.

    • Abstract


      A fossil leaf resembling Poeciloneuron indicum Bedd. (Clusiaceae) is described from the Late Oligocene (Chattian 28.4–23 Myr) sediments of Assam. The modern analogue is endemic to the Western Ghats which is situated in the same palaeolatitude. Its presence, along with other known fossil records, indicates that the seasonality in temperature was less pronounced and CMMT (cold month mean temperature) was not less than 18°C with plenty of rainfall, in the region during the period of deposition. The study also indicates that the plant phenology is sensitive towards climate change. The present study is in congruence with the global data.

    • Author Affiliations


      Gaurav Srivastava1 R C Mehrotra1

      1. Birbal Sahni Institute of Palaeobotany, 53 University Road, Lucknow 226 007, India.
    • Dates

  • Journal of Earth System Science | News

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      Posted on July 25, 2019

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