Evidence of avian beginnings has been elusive in the fossil record because birds' light, hollow bones rapidly decompose ... of the evolution of birds from theropod dinosaurs that has emerged ...

But it’s not as far-fetched as it seems. Both belong to a group of dinosaurs known as theropods, a clade characterized by hollow bones and three-toed limbs. Advances in paleontology and ...

Hollow-boned and bipedal, the theropod dinosaurs were (and are ... Thick and banana-shaped, the sharp teeth of Tyrannosaurus ...

Unlike most other reptiles and mammals, sauropods and theropods had some bones that were hollow and filled with air. Other animals have solid bones, which means they are much heavier for their size.

Palaeontologists at the University of Southampton believe four bones found at Shanklin last year belong to a new species of theropod dinosaur ... struck by just how hollow this animal was ...

Megalosaurus was a theropod, a class of dinosaurs that were ancestrally carnivorous, bipedal and characterized by hollow, ...