I took a couple of new photos of her today. The second photo shows the other side. It's hard to see in the photo but it has delicate chipping along it's bottom and sides. The blade is thick, about a quarter to a half inch thick. Because of its thickness I don't believe it to be Adena or Hopewell. If I made a guess I'd say
Archaic. I found it in extreme Northern Ohio, very near Lake Erie. Would that be unusual to find a
Hornstone piece way up here?