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What really killed the dinosaurs? (It wasn’t just the asteroid) - Sean P. S. Gulick

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Earth School

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Sixty-six million years ago, near what’s now the Yucatán Peninsula, a juvenile sauropod feasted on horsetail plants on a riverbank. Earth was a tropical planet. Behemoth and tiny dinosaurs alike soared its skies and roamed its lands while reptiles and tentacled ammonites swept its seas. But, in an instant, everything would change. Sean P. S. Gulick details one of Earth's most devastating periods.

How many millions of years ago did the Chicxulub asteroid impact happen, causing the extinction of all non-avian dinosaurs?

Watch the video and finish the Think section to complete the lesson.

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  • Video created by TED-Ed
  • Lesson Plan created by TED Ed

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