I was working at my desk today when one of my fossils caught my eye. I picked it up and thought that looks like a Tully Monster, but a quick check on the internet and I realized too small and not my geological time period, the Tullimonstrum belongs in the Pennsylvanian period. 300 million years ago, too young, there you go Illinois US. So I’m thinking a part of Eurypterid, or sea scorpion, they were around during theSilurian. What do you all think?