Dinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 ...

So far, the oldest-known bird fossil is the famous Archaeopteryx lithographica, discovered in 1861 just two years after the publication of Darwin's On the Origin of Species, but Archaeopteryx ...

The Archaeopteryx, a bird-like dinosaur that scientists describe as more reptilian-like than modern birds, were about the size of a crow. More: What lies at the center of the Earth? The answer ...