Archaeopteryx Credit: Peter Montgomery Jupiter’s moon Io is the most volcanic object in our solar system today, but our planet gave Io a run for its money more than 200 million years ago. At that point in our planet's history, our world was dominated by the Triassic period's great reptiles, amphibians and earliest dinosaurs. This was a time when the Earth had a single continent - Pangea - and life was wildly evolving. But the break up of Pangea into the continents we see today was one of violence and mass extinction. It has long been known that the Triassic - Jurassic boundary marks a great...

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