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€¦ · the survival of the heavy, horned dinosaurs based almost com- pletely on the existence of cheeks. But scientist Lawrence Witmer believes otherwise. Dr, Witmer (above, with

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Page 1: €¦ · the survival of the heavy, horned dinosaurs based almost com- pletely on the existence of cheeks. But scientist Lawrence Witmer believes otherwise. Dr, Witmer (above, with
Page 2: €¦ · the survival of the heavy, horned dinosaurs based almost com- pletely on the existence of cheeks. But scientist Lawrence Witmer believes otherwise. Dr, Witmer (above, with
Page 3: €¦ · the survival of the heavy, horned dinosaurs based almost com- pletely on the existence of cheeks. But scientist Lawrence Witmer believes otherwise. Dr, Witmer (above, with
Page 4: €¦ · the survival of the heavy, horned dinosaurs based almost com- pletely on the existence of cheeks. But scientist Lawrence Witmer believes otherwise. Dr, Witmer (above, with