Millions of Years Ago, a Bustling Crossroad

In a photo provided by NASA, a nearly 9-foot slab of rock found in a parking lot on the grounds of NASA’s Goddard Spaceflight Center in Maryland that holds the fossilized tracks of several dinosaurs and even a few early mammals. The site was almost obliterated before the rock was unearthed. (NASA via The New York Times) -- FOR EDITORIAL USE ONLY. --