Fossil Friday!

This week's Fossil Friday comes from another Fossil Fan: Gerald Wilgus!  Gerald snapped this picture on his travels through the Ashfall Fossil Beds site in Nebraska earlier this week.  Dating from the Miocene, this is just a small piece of the entire body - and I won't tell you which part as I like to keep our fans on their toes (hint! hint!).

Can you identify this fossil? First person to get it wins bragging rights for the week!