Types of dinosaurs include the apatosaurus, the anklyosaurus and the stegasaurus. The apatosaurus was a plant-eating dinosaur that lived during the Jurassic Period, between 115 to 150 million years ago.
The apatosaurus was one of the largest animals that ever lived. Scientists believe that it was between 69 and 75 feet long and weighed as much as 39 tons. It had a very long neck made up of tall, paired spines. Its tail was very long and unusually slender, and could have even made a sonic boom when it was whipped.
The anklyosaurus was a dinosaur whose body was covered with a natural armor. Its name means "fused lizard" because many of the bones in its body were fused. The top part of its body was covered with knobs and plates of bones called scutes. It had a club of bone at the end of its tail, horns projecting from its face and spikes along its sides. It was also the size of a van. It could grow to over 20 feet long, stand over 5 1/2 feet tall at the hip and weigh 4 tons. It lived during the Cretaceous period, about 65 million years ago.
The stegosaurus, which also lived during the Jurassic period, is known for the two rows of plates along its back and the pairs of spikes at the end of its tail. It grew up to 30 feet long, had a small head and tiny brain, and was an herbivore.