posted June 22, 2006 07:34 PM
SIXTY-FIVE million years ago a meteor wiped out the dinosaurs. Now new evidence suggests an even bigger chunk of rock hurtled from space into the Earth to give birth to them.Scientists have located a massive crater under the Antarctic ice that they believe gave rise to the evolution of dinosaurs.
The 300-mile (480km) wide crater is thought to have been created by a meteor almost as big as London. It dates back 250 million years to the time of the biggest mass extinction in Earth’s history and the event that led to the first dinosaurs evolving.
Such was the catastrophic nature of the extinction that up to 96 per cent of all marine creatures were killed and 70 per cent of land animals. The strike may also have been powerful enough to have begun the break-up of the Gondwana supercontinent, which resulted in Australia sheering off and drifting northwards.
complete article --> Birth of Dinosaurs
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