Australasian Science: Australia's authority on science since 1938

The World’s Oldest Fishes

Artist’s reconstruction of Metaspriggina walcotti. Credit: Maryanne Collins

Artist’s reconstruction of Metaspriggina walcotti. Credit: Maryanne Collins

By John Long

Just 6 cm long and lacking fins and bone, the world’s oldest fish looked more like a worm yet it was the most advanced creature on Earth about 518 million years ago.

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