How Many Mass Extinctions Have There Been?

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Paleontologist excavating fossils in Colorado's Dry Mesa Quarry

ERN Item Type: 

  • Videos or Animations

Organization: 

MinuteEarth

Description: 

This video clip is about mass extinctions. In the late 1970s, a scientist by the name of Jack Sepkoski embarked on the most ambitious fossil hunt ever. He created a chart that shows what is today called "The Big Five Mass Extinctions." The chart is still used today by paleontologists, but is looked at with many different views and theories.

Publication Year: 

2016

Grade Level: 

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Earth Science Big Ideas: 

Is this tagged to NGSS by the organization?: 

No

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