Scientists Can't Clarify a Mass Shark Extinction That Occurred 19 Million Years In the past

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solarseven/Shutterstock A brand new examine printed in Science suggests that the majority sharks and shark species died off in a mass extinction occasion 19 million years in the past. It could have been probably the most devastating extinction occasion in sharks’ 450 million-year historical past, however scientists can’t clarify what went incorrect. Researchers Elizabeth Sibert …
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