The dinosaur extinction 65 million years ago coincided with similarly extensive eruptions in India.

Dr. Muller had the dinosaur extinction in mind when he proposed the current research.

But it is no accident that human beings are so interested in dinosaur extinction.

Thorne said, "What does that have to do with dinosaur extinction?"

The Chicxulub crater was big enough to account for the dinosaur extinctions, and its age was exactly right.

This could be a factor in the flourishing of mammals after the dinosaur extinction 65 million years ago.

The final section is, appropriately, on the dinosaur extinction 65 million years ago.

The link between the two schools of dinosaur extinction is being constructed from well-known scientific principles.

The moral of this tale is that we should not look for 'the' cause of the dinosaur extinction.

The book described the circumstances leading to the discovery that the dinosaur extinction was triggered by a cometary impact.