Researchers studying a 250-million-year-old fossil have found the first ever proof that mammal ancestors laid eggs, with the discovery also shedding light on a remarkable survival story. The fossil, ...

The small, plant-eating Lystrosaurus thrived post-extinction, while its predators suffocated to death. Its eggs played a critical role. New analysis shows several families of dinosaurs were likely ...

As we move through the Sixth Extinction, it can be beneficial to examine what caused massive die-offs in the past. Lystrosaurus specimens from South Africa have been found that may help clarify what ...

That matters because Lystrosaurus was no obscure reptile-like relic. It was one of the great survivors of the end-Permian mass extinction, the catastrophe about 252 million years ago that wiped out ...