由石油勘探引起的划带重点化石已经显然由大化石转移到微体化石。
The shift in emphasis from the use of macrofossils to microfossils for zonation, caused by oil exploration, has already been noted.
我国贵州瓮安陡山沱期磷块岩中的磷酸盐化球状化石是近年来受到广泛关注的一类微体化石。
In recent years much attention has been paid to phosphatized spheroidal fossils found in the Sinian Doushantuoan phosphorites in Weng an, Guizhou Province.
这一成果对于贵州北部下奥陶统的研究，提供了微体化石资料。
This achievement provides the microfossil materials for the study of the lower ordovician in Northern Guizhou.
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