Scientists Can’t Explain a Mass Shark Extinction That Happened 19 Million Years Ago

A new study published in Science suggests that most sharks and shark species died off in a mass extinction event 19 million years ago. It may have been the most devastating extinction event in sharks’ 450 million-year history, but scientists can&… … Continue readingScientists Can’t Explain a Mass Shark Extinction That Happened 19 Million Years Ago