But, as new research shows, Brachiosaurus and other sauropod babies appear to have been regular dinner fare for meat-eating dinosaurs 150 million years ago. The researchers concluded that baby and young juvenile sauropods were the most common food source for the meat-eating dinosaurs at the top of the food chain. This ecosystem's meat-eating dinosaurs were formidable. There also were Ceratosaurus at around 23 feet (7 meters), Marshosaurus at about 15 feet (4.5 meters) and Stokesosaurus at approximately 12 feet (3.5 meters). "This deposit was made by a drought, so it's one of the only places where you get everything, from small lizard-like animals to the largest dinosaurs," Morrison said.