GreenTracker| ‘Pesky new fossils’ keep popping up to challenge researchers most basic assumptions about bird-from-dinosaur evolution. New studies contradict further that an evolutionary theory only 20 years old is wrong: that birds did not descend from ground-dwelling theropod dinosaurs. In fact, argue experts, the reverse may be true.
The new theory, led by researchers at Oregon State University is : birds may have had an ancient common ancestor with dinosaurs, but they evolved separately on their own path, and after millions of years of separate evolution birds also gave rise to the raptors. Small animals such as velociraptor that have generally been thought to be dinosaurs are more likely flightless birds. via Science Daily