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Fossil 'balls' are 1 billion years old and could be Earth's oldest known multicellular life


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Scientists have discovered a rare evolutionary “missing link” dating to the earliest chapter of life on Earth. It’s a microscopic, ball-shaped fossil that bridges the gap between the very first living creatures — single-celled organisms — and more complex multicellular life.

The spherical fossil contains two different types of cells: round, tightly-packed cells with very thin cell walls at the center of the ball, and a surrounding outer layer of sausage-shaped cells with thicker walls. Estimated to be 1 billion years old, this is the oldest known fossil of a multicellular organism, researchers reported in a new study. 


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