''We now know prehistoric fish gave rise to the modern fish fauna as we know it.''
A 419 million-year-old fossilised fish has been found.
The discovery, made by a team of international scientists China, is thought to be the oldest known creature with a face and experts have described the find as ''stunning''.
The fossilised fish is also expected to help experts in their quest to find out more about the evolution of humans.
Palaeontologist Professor John Long of Flinders ¬University, Adelaide, said: ''It finally solves an age-old problem about the origin of modern fishes.
''We now know prehistoric fish gave rise to the modern fish fauna as we know it.''
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