Fossils in China Suggest Complex Animal Life Predated the Cambrian Explosion

• •Fossils in Yunnan province date to 554 million years ago, predating the Cambrian explosion's start at roughly 539 million years ago by 15 million years.
• •The fossil bed contains both Ediacaran and Cambrian species, suggesting it captures a transitional period between the two eras.
• •The findings challenge the long-held model that complex animal life diversified abruptly during the Cambrian period alone.
• •Well-known animal groups were already emerging during the late Ediacaran period, indicating a more gradual evolutionary timeline.
• •The discovery reframes the Cambrian explosion as an acceleration of diversification rather than its sudden origin.

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