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The fossil of Archaeopteryx is an evidence that birds originated from reptiles. It had beak like a bird but teeth and heavier jaw like reptiles. It's forelimbs were modified into wings like birds nut had claws on its wings. It had feathers like birds but also had scales like reptiles. It had a feathery tail and tail vertebrae.
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A fossil archaeopteryx looks like a bird it had feathers bu could not fly. later they adapted and becoming tje ancestors of present day birds.
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