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Submitted on: 25 December 2015.
Revised on: 12 February 2016.
Accepted on: 28 February 2016.
___________________Journal of Palaeogeography-English
Submitted on: 23 August 2005.
Revised on: 22 September 2005.
Accepted on: 14 November 2005.
___________________Journal of Palaeogeography-English
Submitted on: 27 April 2002.
Revised on: 06 June 2002.
Accepted on: 29 June 2002.
___________________Journal of Palaeogeography-English
Submitted on: 07 January 2017.
Revised on: 30 March 2017.
Accepted on: 29 April 2017.
___________________Journal of Palaeogeography-English
Submitted on: 23 June 2006.
Revised on: 30 September 2006.
Accepted on: 27 November 2006.
___________________Journal of Palaeogeography-English