Found this trilobite fossil last summer. Pretty sure it’s Calymene from the Silurian period (feel free to correct me). But there’s this little thing poking out the side. I have no clue how to prep a fossils but I wanna know what it is! Found in IL.

Found this trilobite fossil last summer. Pretty sure it’s Calymene from the Silurian period (feel free to correct me). But there’s this little thing poking out the side. I have no clue how to prep a fossils but I wanna know what it is! Found in IL.