the early cambrian

基本解释

In South China, the Early Cambrian black rock series is rich in metallic and nonmetallic mineral ersources.
我国南部早寒武世黑色岩系中，蕴藏丰富的金属和非金属矿产。
Protoconodonts and conodont-like microfossils are characteristic components in the early Cambrian skeletal faunas.
原牙形类和牙形状化石是早寒武世微小骨骼化石中非常特征的一个类群。
Kuanchuanpu biota is the Early Cambrian microfossil which is characterized as an early animal and plant fossil in the southern region of Shaanxi province.
宽川铺生物群是陕南地区早寒武世早期一个以微体动、植物化石为特色的生物群。