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The K-Pg Extinction Event

Describe the Cretaceous–Palaeogene (K-Pg) extinction event approximately 66 million years ago, including the asteroid impact theory and its evidence (iridium layer, Chicxulub crater), and understand that this ended the reign of non-avian dinosaurs

Typical age: 911 years

Can your child explain what scientists think caused the dinosaurs to go extinct — and describe at least one piece of evidence for the asteroid theory?

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Dinosaurs We…The Mesozoic…Changing Sci…Mass Extinct…