Charles River Editors

As scary as the shark in Jaws is, the extinct megalodon had teeth three times the length of those found within the jaws of a great white shark, so a human would only have been a small snack. In fact, the megalodon was capable of swallowing a small car. Known to scientists as Otodus megalodon or Carcharocles megalodon (otodus meaning “tooth shaped like an ear”; carcharocles meaning “well known for jaggedness”; and megalodon meaning “big tooth”), this predator lived approximately 23–3.6 million years ago), from the early Miocene Epoch to the early Pliocene Epoch. The genus name Otodus and the family name Otodontidae are now the most commonly used, but scientific literature remains full of the older designation, and many of the shark experts regard the new family designation as flawed. 

 For many years, megalodon was thought to be more closely related to the great white shark (Carcharodon carcharias), and though both are still part of the order Lamniformes, the two species now reside in different families: Lamnidae and Otodontidae (megalodon). Either way, while great white sharks can reach sizes of 20 feet long and nearly 2.5 tons in weight, the average megalodon was twice as big, and some of them may have been about three times as big. The sheer size allowed it to target prey as big as whales, and the massive jaw allowed it to simply tear through any kind of body with no regard for the prey’s most vulnerable spots. 

 While all of that seems to be beyond dispute, almost everything else about the history of the megalodon is up for debate, from its origins to its extinction. The Megalodon: The History and Legacy of the World’s Largest Prehistoric Predator covers that expansive history in detail, from what is known to what remains most mysterious.

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