Orthodox paleontologists insist most of their dinosaurs ate mush. They condemn both of the great tribes of plant-eaters—the brontosaurs and the duckbills—to a way of life at the water’s edge, forced to eat nothing but soft water plants. (real size dinosaur)In its own way, this theory epitomizes the traditional view of most dinosaurs as swampland creatures, virtual dead ends in evolution’s race to develop lively, active species. In 1915, William Diller Matthew, a very respected mammal paleontologist, wrote, a highly influential book, Climate and Evolution, which argues that evolution bogs down in the soggy lowlands. Matthew believed that only on the high, dry soil of plains and plateaus did evolutionary forces create the most vigorous, most advanced creatures. There’s a lot of truth in Matthew’s thesis.(lifelike dinosaur) It has been ascertained, for example, that water-loving turtles and crocodiles evolve most slowly, changing so little on average through geological time that a single genus can be followed for thirty million years or more. So the orthodox concept of a mush diet is consistent with the overall theory of sluggish dinosaurs: soft, plant food was all they required for their sluggish metabolic needs, and the consequent swampy habitats limited dinosaurs to slow rates of evolution.
There may be some ground for believing the brontosaurs ate such soft foods. If the possibility of gizzard stones is ignored, the brontosaurs’ dentition does seem little equipped to deal with meals of tougher plants.(life size dinosaur) But there are no grounds whatsoever for believing it of duckbills. The mouth of a duckbill dinosaur contained one of the most efficient cranial Cuisinarts in landvertebrate history. Duckbill teeth and jaws were incomparable grinders, designed to cope with foods right inside the duckbill’s oral compartment.