The Jurassic Period

The Jurassic Period started 201 million years ago, and lasted until 145 million years ago. Dinosaurs thrived in this era, and are known for their towering size. Here's a list of prolific dinosaurs during the Jurassic Period: The Brachiosaurus was a huge plant-eating dinosaur that lived in prehistoric North America. The Stegosaurus was another large plant-eating dinosaur from the Jurassic Era.