British scientists trying to solve the mystery behind eating habits of herbivorous dinosaurs found the species had a unique way of chewing their food unlike anything alive today. The scientists at University of Leicester, who studied the microscopic scratches on the teeth of Hadrosaurs, herbivorous duck-billed dinosaurs, found that rather than having a flexible lower jaw joint, the creatures had a hinge between the upper jaws and the rest of the skull. “As they bit their food the upper jaws were forced outwards, flexing along this hinge so that the tooth surfaces slid sideways across each other, grinding and shredding food in the process,” palaeontogolist Paul Barret said.
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