There are lots of ways scientists can learn about dinosaurs. We can discover a lot by examining their skeletons– their fossilized bones contain clues about how dinosaurs grew and how they died, and comparing different species’ skeletons helps us see how they were related to each other. But there are other kinds of fossils that don’t actually contain any dinosaur body parts: fossilized footprints.

Technically, a fossil is the remains or an impression of an organism, preserved in rock. That means that the preserved footprints that dinosaurs left behind are fossils. Fossil footprints can tell us about how dinosaurs moved, whether they traveled alone or in groups, and how fast they were. Scientists have found a couple footprints that they suspect belonged to T. rex. This footprint is 33 inches long!


Image courtesy of Wikimedia Commons user Rufous-crowned Sparrow

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