Extinct megalodon shark was even bigger than previously thought
New research reignites debate over the size of this extinct giant, also suggesting it looked unlike a great white ...
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Placoid scales on the megatooth shark, Otodus megalodon (IMAGE)
Close-up view of tiny placoid scales of the iconic extinct megatooth shark, Otodus megalodon, compared to a tip of a 0.5-mm mechanical pencil lead on the bottom right corner. Credit must be given ...