Not far from the Colorado-Utah border, the Mygatt-Moore Quarry bonebed is brimming with hundreds of fossils from Jurassic favorites like Apatosaurus and Allosaurus. Similar dinos have been found ...

Strong forelimbs with sharp claws, powerful hind legs and recurved, dagger-like teeth are evidence that Allosaurus was a formidable predator. Although it was much smaller than sauropods like ...

Allosaurus was among the earliest dinosaur discoveries, and fossils are plentiful, making it a darling of paleontologists, as well as amateur dinosaur observers. Fossils possibly belonging to ...

One hundred and fifty million years ago, the American west was a pretty wild place. Local carnivores included the 20-foot Ceratosaurus, the 28-foot Allosaurus, and the 30-foot Torvosaurus.As if ...

However, the slender tip of Apatosaurus' tail would probably be unable to hurt any predators, negating its use as a weapon. Apatosaurus, like its close relative Supersaurus, had unusually tall ...

Tyrannosaurus, Apatosaurus, Triceratops, Allosaurus, Edmontosaurus—their skeletons remains as impressive as ever, but given all the new dinosaur species discovered during the past century ...

Curt Bramble — why Utah had made the Allosaurus its official state fossil. “I didn’t know we had a state fossil,” Bramble says. So Kenyon launched into a long argument about why Utahraptor ...

A COMPUTER reconstruction of a fearsome Allosaurus dinosaur has revealed that its butt was much worse than its bite, solving the mystery of how it hunted 150 million years ago. Big Al: Emily ...

Apatosaurus belongs to a group of dinosaurs called the sauropods. This group of herbivorous (plant-eating) dinosaurs consists of the largest animals that ever lived on land. An animal this size ...

Apatosaurus suffers from an identity crisis of epic proportions. Even today, many people only know this amazing animal as the Brontosaurus, a name that was discarded 111 years ago. Really, it’s ...