Fossil discovery rewrites understanding of reproductive evolution
A remarkable 250 million-year-old “terrible-headed lizard” fossil found in China shows an embryo inside the mother — clear evidence for live birth. Head of The University of Queensland’s School of Earth and Environmental Sciences and co-author Professor Jonathan Aitchison said the fossil unexpectedly provided the first evidence for live birth in an animal group previously thought to exclusively lay eggs. “Live birth is well known in mammals, […]