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South African Embryo Fossil May Push Back Direct Evidence of Egg-Laying in Mammal Ancestors
Key Takeaways
- A Phys.org candidate describes a South African embryo fossil as the world’s oldest proof that mammal ancestors laid eggs.
- The fossil is tied to therapsids, animals that lived between 280 and 200 million years ago.
- The source notes that therapsids were first described more than 150 years ago from South African fossils.
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DT Editorial Team··via phys.org