First live birth evidence in 250-mn-yr-old dinosaur relative
Researchers studying the fossil of a dinosaur-like animal have found the first-ever evidence of live birth in an animal group previously thought to only lay eggs. The 250 million-year-old "terrible-headed lizard" fossil revealed that it was carrying an embryo. While the animal would have measured 3-4 metres long, with a 1.7-metre-long neck, the embryo might have been 0.5 metres long.