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The International Subcommission on Permian Stratigraphy (SPS)
is a subcommission of the
International Commission on Stratigraphy
International Union of Geological Sciences
 
The primary objectives of the SPS are to define the series and stages of the Permian by means of internationally agreed GSSP's and to provide the international forum for scientific discussion and interchange on all aspects of the Permian, but specifically on refined regional stratigraphic correlations using a standard, globally applicable stratigraphic scale.

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  Kungurian Workshop held in Wells, Nevada on June 8th [2012-7-10 13:30:15]
  PALAEOWORLD back issues are available now online [2011-3-29 14:47:43]
  Report of the Cisuralian GSSP Field Workshop [2007-8-28 9:07:55]
  The XVI International Congress on the Carboniferous and Permian (ICCP 2007)—Nanjing, China, June 21-24, 2007 [2007-8-28 9:06:09]
  Report of SPS Working Group on “Using Permian Transitional Biotas as Gateways for Global Correlation” [2006-11-15 13:06:36]
  Our distinguished colleague Prof. Jin Yugan passed away this morning [2006-6-26 10:55:40]
  Base-Changhsingian GSSP is Unveiled [2006-6-15 16:57:13]
  Changhsingian -base GSSP has been formally ratified by IUGS [2005-9-24 16:30:41]
  International Workshop on the Meishan-Cores Project  [2005-6-2 14:25:01]
  Changhsingian-base GSSP proposal was passed by the voting of ICS [2005-5-30 8:37:43]