Humans' ancestors were sharks?

Humans evolved not from primates, but from a prehistoric shark that roamed the seas more than 300 million years ago, say scientists. The primitive fish named Acanthodes bronni, a Greek word for 'spiny', was the common ancestor of all jawed vertebrates on Earth - including us, according to new research.

A new study says all jawed vertebrates, including humans, evolved from a species of shark that lived about 300 million years ago. Scientists came to the conclusion after analysis of a 290-million-year-old fossil braincase.

Professor Michael Coates, a biologist at the University of Chicago says one of the Acanthodes genetic lines evolved into the subspecies - ancestor of humans

The acanthodians died out about 250 million years ago and generally left behind only tiny scales and elaborate suits of fin spines, which researchers are studying now.

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