Le mégalodon se met au régime

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Le mégalodon, qui a été immortalisé en tant que requin monstrueux dans le film "En eaux troubles", était effectivement une créature redoutable des mers. - L'info en continu  https://buzzplus.fr/ Infos, news & actualités - L'information internationale en direct.

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00:00 The Megalodon, which was immortalized as a monstrous shark in the film "In our troubles",

00:04 was indeed a formidable creature of the seas.

00:07 However, a new study of its fossil remains, published on Monday,

00:12 describes it as being thinner than what had previously been painted.

00:15 Disappeared from the oceans 3.6 million years ago,

00:19 researchers estimated its size to be between 15 and 20 meters long.

00:22 An error margin explained by the small number of remaining fossils,

00:26 teeth and incomplete vertebrae assemblages.

00:29 Above all, it was assigned the same imposing profile

00:32 as that of the only large-sized shark existing today, the Great White Shark.

00:36 Failed, according to the study published in the prestigious Palaeontologia Electronica magazine,

00:41 which depicts a more elanced animal, on the model of the current Macaw shark.

00:45 "Our team has reexamined the fossil record and discovered that Megalodon

00:49 was much thinner than supposed so far,"

00:52 said biologist Philip Stern, from the University of California at Riverside, in a statement.

00:58 "It would not have been a formidable predator, at the top of the marine food chain," he added.

01:04 Based on this new analysis,

01:07 the researchers assign it a very particular behavior.

01:09 It would not have needed to hunt very often because of a very long digestive tube,

01:14 in accordance with its large size.

01:16 The latter could also have been a handicap

01:19 when more cunning but also faster predators arrived.

01:22 But Megalodon may not have been a powerful swimmer,

01:26 compared to the Great White Shark,

01:28 said a co-author of the study, Kenshu Shimada,

01:31 paleobiologist at the University of Polk in Chicago.

01:34 One of the theories explaining the extinction of Odontus Megalodon

01:37 is based on a rarefaction of its prey.

01:39 But Mr. Stern is moving forward with another scenario.

01:42 "I believe that a combination of factors led to its extinction,

01:46 but one of them could have been the emergence of the Great White Shark,

01:49 which was perhaps more agile, and therefore a better predator than Megalodon," he said.

01:54 Having an exact image of the real shape of the animal

01:57 requires putting your hand on a skeleton more complete than the rare elements available,

02:01 according to Mr. Shimada.

02:02 He added that "the fact that we do not know exactly what Odontus Megalodon looked like

02:07 leaves free rein to our imagination.

02:09 And to that of the filmmakers. "

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