Okay so my photos really sucked....I am trying to take new ones.....but...sounds like my so called arroheads are just rocks....alas......but how about the one that looks like a fossil? Does anyone know what that could be?

I found these last week while in Clarksville Tennessee. We were in a park in a creek bed that was drying up because of the drought there....i am hoping they are real arrowheads or the like.