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Pregnant fossil shows bird and crocodile ancestors gave birth to live young' https://www.birmingham.ac.uk/news-archive/2017/pregnant-fossil-shows-bird-and-crocodile-ancestors-gave-birth-to-live-young
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Pregnant fossil shows bird and crocodile ancestors gave birth to live young' https://www.birmingham.ac.uk/news-archive/2017/pregnant-fossil-shows-bird-and-crocodile-ancestors-gave-birth-to-live-young
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