Dinosaur tracks may be fossils but they aren't formed in the same way as fossilized bones. Here's how dinosaur tracks fossilize:

• When a dinosaur walks through soft earth or compact sand it leaves a footprint just like you.
• As the mud or sand dries it gets hard but isn't yet rock.
• Deposits, such as dirt and other sand, then must bury the tracks.
• Over millions of years the buried earth lithofies meaning it turns to rock.
• Erosion - the movement of rock and soil from one place to another - separates the different layers of earth and exposes the fossilized dinosaur tracks.