Ancient Nervous System Holds Evolutionary Clues

It's about the size of a shrimp, but this little critter may make a big contribution to our understanding of the earliest days of animal evolution. The animal is called Chengjiangocaris kunmingensis (C. kunmingensis) and it lived during the Cambrian "explosion" about 500 million years ago, when the planet was bursting with all kinds of sea life.  What's special about this little guy is that when a research team from China, Germany and Britain took a close look,...

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