| 1 | This is like the Archaeopteryx of primate evolution. | |
| 2 | Moreover, its bone structure was similar to that of Archaeopteryx. | |
| 3 | The earliest known bird, Archaeopteryx, lived during the Jurassic, the period before the Cretaceous. | |
| 4 | Wobbling perch: Archaeopteryx is one of the most famous fossils ever unearthed | |
| 5 | Some paleontologists now say Archaeopteryx may have been a feathered non-avian dinosaur. |