4 weeks ago Louis Santora posted an image in the group What is it? from the myFOSSIL app I know you people are probably sick of me, but WHAT IS THIS STUFF?P.s.:two pieces are dungeon MacKenzie Smith replied 3 weeks, 6 days ago The thin black piece with ridges is a ray plate. (ray tooth) Sadie Mills replied 3 weeks, 6 days ago If you take photos a little bit closer and individually, I bet the community can help with ID! Include where they were found if you know it! Jeanette Pirlo replied 1 week, 4 days ago Brown serrated piece at top right is a broken sting ray spine.