Paleontologist are people that study fossils. Paleontologist find many types of fossils like mold fossils, cast fossils, and leaf fossils , and insect fossil things like that. Paleontologists help us learn about how earth was like when dinosaurs ruled earth. Paleontologist use many tools to find fossils one of the tools is a hammer. They use a hammer to break the rock so they can get the fossil out and take it to see what it is.if u want to be a paleontologist you have to go to college.