Hi,
I am having trouble identifying what appears to be a plant fossil. I found it recently at Ft. Gibson Dam in Oklahoma. The most tell-tale markings are in the lower right hand corner of the attached photo. Any I.D. will be much appreciated. Also does anyone know the formation? Pitkin Ls, from the Mississippian is at the dam, but my ROCKD app had the formation as Atoka, which is Pennsylvanian.
Thanks to PetrolPete for guiding me to this site.