I received this relatively large fossil about 4 years ago as a Christmas present from a friend. All the information I have about this specimen is that "it comes from the Carboniferous", it was bought from a peddler at the local Christmas market without asking for the provenance. Now I am trying to definitively identify it.
I compared it to all my fossil ferns and to many pics online, and some photos of Pecopteris polymorpha are particularly similar in shape.
^This is one of the images I found online. There is a surprising similarity even with the surrounding matrix, could my fossil come from the same formation?
My specimen measures about 180 x 140 mm.