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First live birth evidence in dinosaur relative
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Scientists have uncovered the first evidence of live births in the group of animals that includes dinosaurs, crocodiles and birds.
All examples of this group, known as the Archosauromorpha, lay eggs.
This led some scientists to wonder whether there was something in their biology that prevented live births.
But examination of the fossil remains of a very long-necked, 245 million-year-old marine reptile from China revealed it was carrying an embryo.

http://www.bbc.com/news/science-environment-38971504
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