Top 4 in Top 10 Most Popular Dinosaurs.
Diplodocus is a dinosaur of the Diplodocidae. Its bone fossils were first discovered by Samuel Wendell Williston. Diplodocus lived in western North America at the end of the Jurassic period, dating from 150 million to 147 million years ago. They can exceed 30 meters in length and weigh about 10 tons.
Diplodocus is one of the most easily identified dinosaurs, with a huge body, long neck and tail, and strong limbs. Many years ago it was considered the longest dinosaur.