A team of scientists led by Jingmai O'Connor from the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP), Chinese Academy of Sciences, reported the first occurrence of medullary bone in ...

Have paleontologists found a way to tell the gender of a dinosaur? Based on some sexual kinks, preserved in their bones for ...

Use one of the services below to sign in to PBS: You've just tried to add this video to My List. But first, we need you to sign in to PBS using one of the services below. You've just tried to add this ...

It's a girl … and she's pregnant! Paleontologists at North Carolina State University have determined that a 68 million year-old Tyrannosaurus Rex fossil from Montana is that of a young female, and ...

A Tyrannosaurus rex dinosaur that died 68 million years ago has provided some of the strongest evidence yet that birds are the closest-living relatives of dinosaurs, scientists said Thursday. Soft ...

The images are vivid: mother dinosaurs guarding their nests, males fighting each other for females or territory. But how do you tell the sex of a dinosaur? Despite many claims to the contrary, recent ...

INVESTIGATION of avian medullary bone in this laboratory led to the observation of a substance therein which gave a very strong positive reaction with the periodic acid–Schiff technique. In some ...

When paleontologists Jack Horner and Bob Makela named a large hadrosaur that had been found among eggshells and nests in 1979, they called it Maisaura, the “good mother reptile.” The name suggested ...

External skeletal fixation is generally considered the best stabilization technique for immobilizing avian long bone fractures, but one of its major complications is the failure of bone-fixation pin ...

AMERICAN orthopedic surgeons have been skeptical about the use of medullary nailing of long-bone fractures. This, I think, is fortunate, as the slow acceptance of this technic has allowed us to avoid ...