Ancient teeth sharpest to date

Fossilised teeth from a 200-million-year-old fish have been found to be the sharpest ever recorded.

The conodont fish appeared 500 million years ago, and might be the first vertebrate to develop teeth.

Conodont teeth came together like scissors to slice up food, having taken an alternate evolutionary route to humans who use jaw muscles and blunt teeth to break up food.

Read more at Monash University