The finding sheds new light on a Jurassic landscape subject by dinosaur giants that lived 145 to 150 million years ago (prehistoric time line).

In just three weeks of effort on federal land close to Hanksville, Utah, paleontologists declare they unearthed at least two meat-eating dinosaurs, a possible Stegosaurus, and four sauropods—long necked, long-tailed plant-eaters that can reach 130 feet (40 meters) long, making them the biggest animals ever to have walked the Earth.

"So far [the paleontologists] have revealed not just scattered bones however partial and complete skeletons. It's truly amazing," said Scott Foss, a paleontologist in the Bureau of Land Management's (BLM's) Salt Lake City office.

Source: news.nationalgeographic.com