The Atrium

65 million years ago, a catastrophic event occurred on earth, causing the extinction of the dinosaurs. The event is commonly referred to as the "K-T Extinction" (a.k.a. Cretaceous-Tertiary Extinction.. apparently, "K" was the traditional abbreviation for "Cretaceous", regardless of the latter's first letter..)

So if anyone ever asks, "When did the dinosaurs become extinct?", you'll know how to answer!