Jaw mechanics in sauropod dinosaurs.

A study of jaw articulation, tooth shape, microwear analysis and wear surface patterns shows that sauropods can be arranged in four different groups according to feeding mechanisms and tooth shape: spoon-like teeth common in camarasaurids, peg-like teeth common in diplodocids, compressed cone-chisel-like teeth common in brachiosaurids and chisel-like teeth common in titanosaurids. Camarasaurids de…