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Prehistoric caiman's bite 'twice as strong'


Still Waters

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A prehistoric caiman that lived in the Amazon region about eight million years ago had a bite twice as powerful as that of a Tyrannosaurus Rex, Brazilian scientists say.

A team of Brazilian paleontologists calculated the strength of a bite by the Purussaurus brasiliensis, a reptile that lived in the Late Miocene period.

They said it could exert a pressure up to 11.5 tonnes. That is 20 times the strength of a white shark's bite.

http://www.bbc.co.uk...merica-31644163

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"The rise of the Andes changed everything for the Purossaurus, which previously thrived on the presence of huge mammals in the regions," she said.

The reptile needed more than 40kg of meat a day, 20 times the amount modern-day alligators eat, she explained.

That doesn't seem like enough (it's about one deer every two days) to cause an otherwise accomplished predator to become extinct.

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