RIO DE JANEIRO, BRAZIL - Eleven-year-old Robson Cavalcante was surprised to find a fossil of a prehistoric reptile buried on the banks of the Acre River in the municipality of Brasiléia, a town in the state of Acre on the border with Bolivia. To G1 news site, he says he thought it was a dinosaur.

"I was fishing with my dad, so I stepped on something different and called him. My father dug it up, and I thought it was a dinosaur," said the boy.

They found the fossil on Thursday, July 11th, and a paleontologist from the . . .

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