The Middle Cambrian Kaili Biota which were buried mainly in situ, lived in the tropical sea far away from the oldland with a normal salinity, good light transmission, oxygen-rich and low energy.

• 摘要以原地埋藏为主的中寒武世凯里生物群生活环境为远离古陆、盐分正常、透光性良好和含氧量充分的热带海洋；