7-foot-long arthropods commanded the sea 470 million years ago, 'exquisite' fossils show

About 470 million years ago, 7-foot-long arthropods ruled the water in what is now Morocco.

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Zagora ,Souss Massa Drâmo ,Morocco ,Switzerland ,Fezouata ,Moroccan ,Farid Saleh ,University Of Lausanne ,Fezouata Shale ,Lower Ordovician ,Live Science ,