![Mass extinction 450 million years ago 'triggered by volcanic eruptions and global warming' | The Independent | The Independent Mass extinction 450 million years ago 'triggered by volcanic eruptions and global warming' | The Independent | The Independent](https://static.independent.co.uk/s3fs-public/thumbnails/image/2020/04/14/10/ordovician-fossil-trilobite.jpg?width=1200)
Mass extinction 450 million years ago 'triggered by volcanic eruptions and global warming' | The Independent | The Independent
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