This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
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B. R. Pratt, 1989 - Small early Middle Ordovician patch reefs, Laval Formation (Chazy Group), Caughnawaga, Montreal area, Quebec - Reefs, Canada and adjacent areas. Canadian Soc. Petrol. Geologists, Memoir (13), 218-223 (book/book chapter, )
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