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Fossil reveals complex brains evolved earlier than previously thought
A 520-million-year-old, three-inch (7.6-centimetre) fossil has yielded evidence that complex brains evolved much earlier than previously thought, scientists said Wednesday. The preserved external skeleton of Fuxianhuia protensa, an extinct type of arthropod, is the earliest known fossil to show a complex brain, according to a study published in the journal…
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