Is this a Phacops or Dipleura cephalon? Or another type of trilobite? Am I looking at it right by calling the crease on the lower part it's "lip"?
I included the top and back side. It seems out of proportion when I think about where the eyes should be.
Maybe someone could take a guess at how wide this one would be if it were whole?
As always, thank you for sharing your knowledge!
Found in Seven Stars, Pa.