Mexidracon longimanus, an ornithomimid with extra-long arms. The new find significantly rewrites the diversity of dinosaurs.

"The fastest dinosaur was likely an Ornithomimosauria," Susannah Maidment, a paleontologist at the Natural History Museum in ...

Drumheller's Royal Tyrrell Museum, opened in 1985, is marking four decades of paleontological excellence with a new exhibit ...

To understand her dinosaur bone, Schweitzer turned to two of the most primitive living birds: ostriches and emus. In the summer of 2004, she asked several ostrich breeders for female bones.

Rich's son, Tim, got his name attached to another Dinosaur Cove denizen, the six-foot-tall Timimus hermani, which probably looked and ran like an ostrich. Dinosaurs also thrived farther south.

The study, published in Royal Society Open Science, compared dinosaur lungs to those of living crocodilians, such as crocodiles and alligator, and the lungs of modern-day bird species, such as the ...

These lanky bipedal dinosaurs from the Late Cretaceous period are often described as ostrich-like, with features that suggest they were built for speed. "Generally, if you have long, slender limbs ...