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Scientists have discovered evidence of brittle star regeneration in a 430 million-year-old fossil, suggesting that this ability has been around for much longer than previously thought. The fossil, found in Morocco, shows a brittle star with a fully regrown arm, providing insight into the evolutionary history of this unique ability. This discovery sheds light on the potential for regenerative medicine and the resilience of marine life.

Source: https://gizmodo.com/brittle-star-cloning-fossil-regeneration-jurassic-1851478894