微化石：形体微小，一般肉眼难以辨认的化石被称为微化石（如有孔虫、放射虫、介形虫、沟鞭藻和硅藻等，以及某些古生物类别的微小部分或微小器官，如牙形石、孢子、花粉等）
通过对南海表层沉积中钙质超微化石丰度和属种组合的分析，得出化石丰度与水深的关系。
Based on the analyses of abundance and assemblages of calcareous nannoplankton of the surface sediments from the South China Sea, the correlation between the abundance and water depth is found.
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.
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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