Giant ancient shark may have gone extinct due to extinction of its small prey
Mystery Sea Monster
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MEGALODON GIANT SHARKS
Whales only recently evolved into giants when changing ice, oceans concentrated prey
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Scientists have discovered that sharks nearly went extinct 19 million years ago. It could be one of the biggest such mass extinction events since the disappearance of the dinosaurs during the Cretaceous
Could an ancient megashark still lurk in the deep seas?
Chunky dunk?' Cleveland's prehistoric sea monster may have been shorter, stouter, than once believed The Daily The Daily
Could megalodon have survived?