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Pennsylvanian

  

      adj  
1    of the state of Pennsylvania  
2    (in North America) of, denoting, or formed in the upper of two divisions of the Carboniferous period (see also Mississippian (sense 2)), which lasted 30 million years, during which coal measures were formed  
      n  
3    an inhabitant or native of the state of Pennsylvania  
4    the. the Pennsylvanian period or rock system, equivalent to the Upper Carboniferous of Europe  
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