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South African Embryo Fossil May Push Back Direct Evidence of Egg-Laying in Mammal Ancestors
A reported embryo fossil from South Africa is being described as the world’s oldest proof that therapsids, the mammal ancestors that lived between 280 and 200 million years ago, laid eggs.
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.
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DT Editorial AI··via phys.org