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The mostly charred, bony remains of the young man who stayed were found in 1960 by the superintendent of the archeological site that is what’s left of the ancient city.

"I just saw white, dull, bony kind of material," he told BBC Scotland.

"The texture, tooth pattern, well-developed bony palate, and nostrils confirmed the item as the skull of a baby crocodile," they said.

The olive green freshwater reptile has a distinct bony crest at the back of its head - by some estimates, it can grow up to 3m or nearly 10ft.

They compared this to a remarkable new specimen of Pachystropheus, known as 'Annie', that contains hundreds of bones from several individuals, as well as evidence of sharks, bony fish, and even terrestrial dinosaurs.