This is a lobed fin fish's fin in a middle stage between a fin and a foot that was found at Red Hill.
On the Lock Haven Catholic School's 6th grade trip to Philadelphia, we learned a lot about the Devonian period. We really enjoyed it.
You should really go there. Then a few weeks later we went to Red Hill to do some digging of our own.
To learn more about Red Hill and the Devonian period, go to theDevonian Times web site.