Rare dinosaur tracks are longest continuous set of sauropod footprints

A long-necked sauropod made these dinosaur tracks (looping round impressions) in Colorado some 150 million years ago during the Jurassic Period. The land is now part of the Grand Mesa, Uncompahgre and Gunnison National Forests in Colorado. Image via USDA Forest Service.

Dinosaur tracks now part of national forest

Some 150 million years ago, a long-necked dinosaur known as a sauropod took 134 steps that are now etched across a landscape in Colorado. The dinosaur made a loop, tracking back...