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It's been 65 million years since the dinosaurs became extinct. But what wiped them out? Hear arguments from the Gradualists and Catastrophists.Key facts
- 65 million years ago the dinosaurs became extinct.
- Was this caused by a meteorite colliding with Earth?
- Had conditions on Earth already deteriorated to block out the sun and create global warming?
- We don't know the cause but it made way for the development of mammals and our world.
Transcript
65 million years ago, at the end of the Cretaceous period, the dinosaurs died out.
Cretaceous period:
144-65 million years ago
The cause of this mass extinction is one of the most debated questions in palaeontology...
Scientists are divided between two central theories: the catastrophists believe the dinosaurs were wiped out by ...
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