There have been a lot of books and publications put out on the Mazon Creek flora, but as @paleoflor stated above, @fiddlehead is your best bet for info. Here is the most recent book on the flora that I know of and it is by @fiddlehead- it is a great book to own, with great info and pictures. Hope this helps.     Here is his book on the Mazon Creek fauna- another great book to own.