Learn more about the schoolyard dinosaur discovery, which found 200-million-year-old fossilized footprints on a boulder from Australia's Early Jurassic period hiding in plain sight.

"It's incredible to think that a piece of history this rich was resting in a schoolyard all this time." In 2002, coal miners in Queensland, Australia, uncovered a rock slab with several three-toed footprints preserved in it.

A slab of rock at an Australian high school, a boulder in a parking lot, and a bookend in a private collection feature 200-million-year-old dinosaur footprints.