Tiny skull has big implications for understanding the largest dinosaurs

Sauropods were the biggest dinosaurs — and the biggest land animals — ever to stomp across the planet. Their long-necked group included apatosaurus, brontosaurus, camarasaurus and the even more massive titanosaurs, whose leg bones were longer than a person is tall.But each of their first steps on Earth were teensy. These great beasts came from little packages, hatching out of eggs no bigger than grapefruits or soccer balls. They must have had "a ridiculous growth rate," said D. Cary