Laurentia is the North American paleocontinent, which also includes present day Northwest Ireland, Scotland, Greenland, the North Slope of Alaska, and the Chukotsk peninsula of NE Russia [REF].
Avalonian terranes that constitute Avalonia are the modern day countries Northern France and Ardennes of Belgium, England, Wales, southeastern Ireland, eastern Newfoundland, Nova Scotia, southern New Brunswick and some coastal parts of New England.