What makes the diplodocus special?

What are five types of dinosaurs? Which of the following is called grave yard of dinosaurs? What hunted the Velociraptors? Which was bigger a giganotosaurus or a t-rex? How did cavemen kill dinosaurs when they were around? Where can you find pictures of T-Rex on the web? Are animals that swim or fly Dinosaurs? Who would win in a battle to the death between T-Rex and Triceratops? How far can tyrannosaurus smell? How big was a stegosaurus in meters? Where can you find the poem Im Shopping For A Dinosaur by Jack Prelutsky? Were all dinosaurs carnivores true or false? How can coprolites tell scientists what a dinosaur might have eaten? What structured adaptations did a T-Rex have? Who named TRex? Does a stegosaurus have any teeth? How many eggs did stegosaurus lay and how did the raise their babies? Why dragons face each other? Was coal formed 1000 million years ago? Does triceratop live on land?