If you haven't been to Kemmerer, put it on your bucket list! This website details all the places you can have a great deal of fun splitting limestone and other soft sediments to find fish skeletons and other animals.
After visiting a quarry in Kemmerer, it seemed like a good idea to ship 500 pounds of un-searched rock to Oregon. The crate cost more to ship than the rock cost, but the effect was worth it. I took several buckets to the local elementary school where the adventurous teacher had covered the desks with paper and had prepared the room for 25 kids to make rocks into pebbles.
After I demonstrated what to do, duos attacked the slabs with a chisel and hammer. They found fish and scales and fish poop!
They were not satisfied, however, with with they found. As each peice was split, they decided to keep splitting. I am not sure that after the hour or so of splitting there was anything larger that an inch square left in the room! Perhaps we made a rock hound or two out of that group of youngsters.
A box made out of a Kemmerer fish.