Did you know that the Ankylosaurus is famous for being one of the most heavily armored dinosaurs? Named by paleontologist Barnum Brown in 1908, the Ankylosaurus stood at about 6 feet (1.8 m) and had deadly horns and spikes to protect itself from other dinosaurs. Readers discover this and much more in the volume, as they learn about the dinosaur's environment, fossils, and other important facts about nature on Earth from many centuries ago. As they uncover fun facts about the Ankylosaurus, readers can look at diagrams such as the "speed-o-meter" and "scary scale" to build their knowledge of the creature compared to other dinosaurs of its time.