As more fossils have been unearthed over the years, and electronic databases and tools made it easier to compile and compare fossils found around the world, more dinosaur gener ...

DENVER — A small roadside quarry west of Denver, site of some of the infamous "Bone Wars" of the 19th century, has revealed a new treasure: the snout of the long-necked dinosaur Apatosaurus ajax.

Apatosaurus had a 50-foot-long tail. (National Park Service Illustration / Bob Walters / Tess Kissinger) The dinosaur formerly known as Brontosaurus could certainly do a lot of damage with its long ...

Pinning down the most titanic of the large sauropod dinosaurs is not an easy task, since the odds were generally against the ...

The dinosaurs might be long gone, though they left their footprints and skeletons all over the state. From the T. rex's tiny arms to the long neck of the Apatosaurus, dinosaurs are fascinating to many ...

The apatosaurus dinosaur was one of the largest animals to ever walk on Earth. Standing more than 20 feet high and 80 feet long, this giant long-neck herbivore lived in the Jurassic period ...