A reconstruction of a Late Jurassic Dry Mesa Dinosaur Quarry ecosystem around 150 million years ago which shows a diverse array of bipedal theropod dinosaurs including the largest in the ecosystem ...

Staying close to the herd is the only chance for baby Pachyrhinosaurus to survive danger. An epic migration in search of food is a challenge for any dinosaur. For baby Pachyrhinosaurus, the 400-mile ...

About 150 million years ago, the land that is now the western United States was alive with dinosaurs. New research shows that the smallest members of the biggest dinosaurs played a huge role in ...

Babies and very young sauropods – the long-necked, long-tailed plant-eaters that in adulthood were the largest animals to have ever walked on land – were a key food sustaining predators in the Late ...

Baby dinosaurs were likely fed more nutritious food than their adult counterparts, a finding that could offer insights into their social evolution, suggests a new study. Paleontologists uncovered this ...

WASHINGTON — It may have been suicidal for a predator to go after a healthy adult Brachiosaurus, a behemoth weighing perhaps 60 tons that was a member of the long-necked group of dinosaurs called ...