Three Mazon Creek Fossil Nodule Pairs, possibly ferns. These came from an estate and were collected in the 1960's. I'm not an expert on these, so I don't know the species, sorry. The smallest has a repair to the negative half. They are not perfect, but are very nice examples and would make a nice addition to your collection. The largest measures about 1.75" x .75", the middle measures about 1.5" x .75", and the smallest measures about .75" x .5". Condition is "Used". Shipped with USPS First Class.