National Geographic on Instagram: "Want to see some big and small dinosaurs, old dinosaurs, and less old—but still really old—dinosaurs? Nat Geo Explorer and Paleontologist Paul Sereno @paulserenoofficial takes us inside the University of Chicago's Fossil Lab to uncover all kinds of dinosaur fossils, from ones you could cradle in your arms to a T. rex that probably never knew what hit it. Learn more about Sereno and his team's work to uncover fossils like these at the link in bio."