Fossils of alvarezsaurid dinosaurs show bird-like air sacs in their bones. Scans revealed hollow spaces connected to their ...

The bone’s architecture—the shape of the femoral head, its separation from the shaft ... a group of ornithischian (bird-hipped) dinosaurs known for their bipedal stance and, eventually ...

Oviraptorosaurs are weird dinosaurs, which look a bit like flightless birds. But these ancient animals aren't just funny ...

But in Australia, since the oldest fossilized dinosaur bones come from the Middle Jurassic ... in which the animals that made the tracks were headed. The 66 fossilized footprints, which range ...