Life
Ancient bird with a movable beak rewrites the story of avian evolution
A skull bone from 67 million years ago reveals that ancestors of modern birds had jointed beaks, not immobile ones as biologists have long thought
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A skull bone from 67 million years ago reveals that ancestors of modern birds had jointed beaks, not immobile ones as biologists have long thought
Stanleycaris hirpex, which lived in the Cambrian period, had two protruding eyes on the side of its head and a larger eye in the centre