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Keywords:

  • brachiopods;
  • Sandbian;
  • Scoto-Appalachian;
  • South Mayo Trough;
  • western Ireland

Abstract

A Late Ordovician (Sandbian), Scoto-Appalachian brachiopod fauna from the Mweelrea Formation in western Ireland confirms a location for the South Mayo Trough adjacent to the Laurentian margin, characterized at this time by a succession of marine excursions over fluviatile environments. The new, younger biostratigraphical data help to constrain the timing of late Grampian folding of this part of the South Mayo Trough. Copyright © 2010 John Wiley & Sons, Ltd.