“Most researchers think the dinosaurs, many plants on land, and much of the life in the sea succumbed to a huge cosmic impact 65.5 million years ago. But new evidence from the sea floor just off Antarctica points to a major extinction there a geologic moment before the impact. The culprit in this earlier cataclysm may well have been humongous volcanic eruptions in India—the same eruptions that some researchers have credited with wiping out the dinosaurs.”

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http://www.sciencemag.org/content/337/6100/1280.full