Curious minds have asked the same question for centuries: Did mammals hatch from eggs? It might sound ludicrous given what we know about modern mammals. However, this was not the case for the ...

When it comes to reproduction, living things have evolved a wildly creative set of strategies. In the animal kingdom, two main modes dominate: oviparity and viviparity. Oviparous animals lay ...

Scientists studying a 250-million-year-old fossil say they can now say with confidence that our mammal ancestors laid eggs. The fossil, found in South Africa, belonged to an embryo of the Lystrosaurus ...

Lystrosaurus seems to have followed a different path, one based on large, yolk-rich eggs and young that were likely precocial. Large soft-shelled eggs may also have helped in another way. Bigger eggs ...

The small, plant-eating Lystrosaurus thrived post-extinction, while its predators suffocated to death. Its eggs played a critical role. Reading time 3 minutes Fantastic numbers of leathery, beaked ...

(CNN) — 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 ...

(CNN) - Researchers said a fossil found in South Africa proves for the first time that mammal ancestors laid eggs. The fossil belongs to a tightly-curled embryo of a Lystrosaurus. The Lystrosaurus is ...