The Changcheng System is a Mesoproterozoic geological formation which has yielded primitive fossil eukaryotes, such as Tappania. It formed around 1.9-1.8 billion years ago as a result of a continental collision in the North China Craton.[1]
This page is based on this Wikipedia article Text is available under the CC BY-SA 4.0 license; additional terms may apply. Images, videos and audio are available under their respective licenses.