250-Million-Year-Old Embryonated Dicynodont Egg Found in South Africa
Using high-resolution CT and synchrotron scanning, paleontologists confirmed that the fossilized specimen from the Early Triassic of the South African Karoo Basin contains an unborn dicynodont Lystrosaurus, resolving a long-standing mystery about whether early mammal ancestors laid eggs. The researchers suggest the dicynodont eggs were likely soft-shelled, explaining why they have remained elusive for so…