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贵州下寒武统牛蹄塘组生物群由大量的海绵动物和节肢动物、软体动物、刺胞动物、腕足动物、半索动物及藻类等门类化石组成 ,其下部生物群的时代早于澄江生物群。
The Lower Cambrian Niutitang Formation in Guizhou Province consists of a large number of fossils such as sponges, arthropods, molluscs, spiny animals, brachiopods, semi-cable animals and algae. The age of the lower biota is earlier than that of Chengjiang group.