National Geographic : 1954 May
71 i~atlonal ueograpnic r'notograpner ltooert I'. sisson Brontosaur Walks Again! A Prehistoric Drama Lives Anew for Museum Visitors Twelve feet at a stride, "thunder lizard" pounded into limbo. All other dinosaurs shared his fate. Most experts believe that their extinction came through inability to adapt to changing conditions such as colder climate, the rising of land masses, and the draining of swamps. Since no marks of tail drag showed between the Paluxy Creek tracks, the author concluded that the animal making them was wading in shallow water. The museum therefore mounted the tail two feet in the air, as if afloat. Behind Brontosaurus, a flesh-eating Allosaurus flexes savage foreclaws and bends to devour a fallen victim. Such a dragon-toothed killer made the tracks paralleling those of the brontosaur in Texas. The display case holds bones of three other dinosaurs-a partial framework of a Diplodocus and skeletons of two smaller reptiles.