A dinosaur egg fossil unearthed in Hekou Formation in China’s Jiangxi province contains an unhatched embryo in a tucked posture, a position previously thought to be unique to birds. The embryo dates back to 66-72 million years ago. Researchers say the discovery was more evidence that today’s birds evolved from theropod dinosaurs.
Video source: Yingliang Stone Nature History Museum
Image source: Julius Csotonyi
Related story:
‘Baby Yingliang’: unborn dinosaur’s position inside Chinese egg fossil strengthens link with birds, say scientists
https://www.scmp.com/news/china/science/article/3160582/unborn-dinosaurs-position-inside-chinese-egg-fossil-strengthens
