Mamma Mia! Fossil Is First Hint Of Live Birth In Ancient Reptile

Here’s some egg-citing news: for the first time in the fossil record, researchers have discovered a specific type of marine reptile that was carrying an advanced embryo at time of death. Why is that interesting? Because the specimen is an archosauromorph, an early member of the same gang of vertebrates that includes dinosaurs as well as pterosaurs, birds and crocodiles, all of which we thought, based on previous evidence, were exclusively egg-layers. Today that changes.

Some 245 million y

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