The prehistoric megalodon is known as one of the most fearsome creatures the world has ever known, a horrifyingly giant shark immortalized in the monster movie The Meg.
However, after reanalyzing the fossil evidence, scientists yesterday said they now think the shark was significantly thinner than previously thought.
While the 2018 B-movie starring Jason Statham depicted a megalodon preying on modern-day humans, the shark actually went extinct about 3.6 million years ago.
Photo: Hugo SALAIS / Metazoa Studio / AFP
Previous research has suggested it could have been up to 20m long, but size estimates have varied widely because they were based on the only remaining fossils of the shark, which are teeth and vertebrae.
Moreover, scientists had assumed that the megalodon had a similar stocky body shape to its modern descendant, the great white shark.
However, a better model may be the thinner mako shark, an international team of researchers behind a study in the journal Palaeontologia Electronica said.
“Our team re-examined the fossil record, and discovered the megalodon was more slender” than had been thought, University of California, Riverside biologist Phillip Sternes said in a statement.
However, in bad news for Statham in the next Meg movie, the shark might have been even longer than previously believed.
“It still would have been a formidable predator at the top of the ancient marine food chain, but it would have behaved differently based on this new understanding of its body,” Sternes said.
In better news for the hapless human victims in a possible future Meg movie, the megalodon “may not have been a powerful swimmer” compared with the great white shark, said study coauthor Kenshu Shimada, a paleobiologist at DePaul University in Chicago.
It might also have had to hunt less due to a longer digestive canal. This could also affect the mystery of the megalodon’s extinction. It was previously theorized that the shark died off because there was less prey around.
However, its updated body image could point toward a different culprit.
“I believe there were a combination of factors that led to the extinction, but one of them may have been the emergence of the great white shark, which was possibly more agile, making it an even better predator than the megalodon,” Sternes said.
Shimada said that knowing the Otodus megalodon’s true shape would require finding a more complete skeleton.
“The fact that we still don’t know exactly how O. megalodon looked keeps our imagination going,” he added.
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