were sauropods— large plant-eating dinosaurs that walked on four legs, had long tails and necks, and tiny heads. They lived over 120 million years ago, during the Cretaceous Period. For the scientists, pieces were beginning to fit together like a puzzle, and a giant titanosaur was taking shape! The small vertebra, or tailbone, that the scientists uncovered had a ball shape in the back and a socket in the front, so bones fit tightly together, one next to the other. This one little bone from the tip of the tail was enough to tell them it once belonged to a titanosaur! TITANOSAURS
“I found some bone pieces over here!” called José. “There are two more over here!” shouted Diego. “This piece over here is a vertebra!” cried Pablo from 100 feet away. José and Diego took a closer look at the vertebra. “The shape makes me think it’s from a titanosaur,” said Diego. “I agree,” said José. “That would explain the giant size of the femur!” Could the vertebra and the femur possibly belong to the same dinosaur? There was only one way to ! nd out!
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