Brachiosaurus, Barosaurus and Dicraeosaurus
Mary Evans Picture Library/Deagostini Editore
Brachiosaurus ('arm lizard') was one of the biggest land animals that has ever lived, weighing around 70 tons. Its front legs were longer than its hind legs, and it could raise its head high off the ground to graze in the trees.
Barosaurus ('heavy lizard') was a huge, long-necked, plant-eating dinosaur. It was slow-moving, with a long neck, small brain, and a long whippy tail. It was between 20-27 metres long, weighing about 44 tons.
Dicraeosaurus ('two-forked lizard') was a herbivore with a large head and long tail. It was 20 metres long and 6 metre tall, weighing 15 tons, and lived in Africa about 150 million years ago.