A killing field from the day the dinosaurs died

Cretaceous inundation
Scientists say a meteor impact 66 million years ago generated a tsunami-like wave in an inland sea that killed and buried fish, mammals, insects and a dinosaur. (Illustration courtesy of Robert DePalma)

First, there was a violent shock. Then, there was the roar of a 30-foot-high wave of water, throwing fish onto a sandbar in what is now North Dakota. Then there was a hail of molten rock, pelting dying fish and soon-to-be-dying land creatures. Then the fires began.

That’s how the doom of the dinosaurs began, nearly 66 million years ago, according to a study to be published in the Proceedings of the National Academy of Sciences next week.

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By Alan Boyle

Mastermind of Cosmic Log, contributor to GeekWire and Universe Today, author of "The Case for Pluto: How a Little Planet Made a Big Difference," past president of the Council for the Advancement of Science Writing.

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