Diplodocus is one of the longest dinosaurs ever to have lived and one of the best-known, as several skeletons have been discovered. Its long, whip-like tail was a wicked weapon! Discover how fast it c
Stegosaurus is described as having a body almost the size of a bus, a head the size of a horse and a brain the size of a walnut! Discover how fast it could move with the Speed-o-Meter, how terrifying
Triceratops has one of the largest skulls of any land animal that has ever lived. Discover how fast it could move with the Speed-o-Meter, how terrifying it was on the Scary Scale, and which of today&#
Megalosaurus was the very first dinosaur to be named, identified in 1824 from bones including a portion of a jaw with large teeth. Discover how fast it could move with the Speed-o-Meter, how terrifyin
Leaellynasaura was a turkey-sized herbivore that survived in a part of Australia that used to be much further south than it is today, attached to a vast polar continent. Discover how fast it could mov
