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No, its actually the other way around: birds evolved from dinosaurs. However, some new hypotheses have been raised that suggest that the raptor dinosaurs (such as Velociraptor and Deinonychus) were actually a type of flightless bird. This hasn't been confirmed yet, but birds still evolved from dinosaurs, specifically the theropods.

Answer:Birds do have many features in common with theropods (bipedal carnivorous dinosaurs) which suggests that they had a common ancestor. It is generally believed that this common ancestor was a dinosaur but it may well have been a bird (see related links).

Looking back in time through the theropod fossil record, these dinosaurs appear to be more bird-like the further back in time you look. Raptors are known to have had feathers and were fairly bird-like, but Archaeopteryx was much more bird-like and lived much earlier and may have been an ancestor of the raptors. There is also a controversial fossil called Protoavis that was dated even earlier and was more bird-like still, with hollow bones like modern birds.

So ancient birds may have existed before the dinosaurs and theropods may be descended from them. We have little record of these ancient birds though because their more fragile, hollow bones reduce the chances of any fossils surviving to the present day.

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