Rockport Quarry Michigan The Fossil Forum
Dec 15, 2011· Do you have "Devonian Strats of Alpena and Presque Isle Counties, Michigan." The book has topo maps in the back to help you find the localities and lists over 100 localities in that area. Not all are great and many are old and overgrown, but some of them are quite good. I believe that the quarry has the following formations.