Is the Protoavis the oldest known birdlike fossil?  

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sciencesolve | Teacher | (Level 3) Educator Emeritus

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As far as it is known, paleontologists have considered Protoavis as an ancestor of Archaeopteryx. But this consideration is controversed since it is based on a skeleton that is far from being complete and the origin of these bones is doubtful, hence there is the possibility that the bones not to have the same organism source.

If this controversial theory is true then the first birds are no longer the descendents of dinosaurs. Hence, according to this theory, if Protoavis is not an early dinosaur, then it may be put aside the first dinosaurs and the classical theory that claims that Archaeopteryx is the ancestor of birds, needs to be modified.

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