I was looking over the Smithsonian collection of Mazon Creek ferns tonight (http://paleobiology.si.edu/mazoncreek/mazonGroups.html). It seems like most ferns are labeled as Pecopteris species, but that there are a number of very similar fern species. Is there a good reference that breaks down the different species and how to identify them? I have Richardson's guide, but that is just for the fauna.
Thanks!
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.