This illustration shows a Brachiosaurus eating from an Araucaria tree. These dinosaurs had enormous necks and relatively short tails. The animal to which the foot belongs was nearly 4 meters high at ...

WASHINGTON — It may have been suicidal for a predator to go after a healthy adult Brachiosaurus, a behemoth weighing perhaps 60 tons that was a member of the long-necked group of dinosaurs called ...