The Chengjiang Shale Formation or the Maotianshan Shales are a series of early Cambrian deposits in the Yunnan Province of China. It is known for fossils of ediacarans, anomalocaridids, halwaxiids, and helcionellids.
The Chengjiang Shale Formation or the Maotianshan Shales are a series of early Cambrian deposits in the Yunnan Province of China. It is known for fossils of ediacarans, anomalocaridids, halwaxiids, and helcionellids.