Middle and late early silurian brachiopod faunas in southwest china .

西南地区早志留世中、晚期腕足动物群。

The fossils show that the bottom of the food chain was dominated by species typical of later triassic marine faunas such as crustaceans , fishes and bivalves and different from preceding ones .

这些化石揭示了生物链的底层被三叠纪后期海洋生物群典型物种所掌控，这不同于之前的世纪里的动物。（比如甲壳类动物、鱼类、贝类）

Ammonites are one of extinct marine faunas at subphylum level , living for a length about 300 million-years ; they have high scientific values in stratigraphy and paleontology .

菊石是一类生存了将近3亿年、业已绝灭的海洋动物；它们的化石在地层学和古生物学具有极大的科学价值。

The author of the 1996 study remarked , " the temporal-spatial distribution of cenozoic faunas and floras on the plateau not only shows the climatic conditions in various periods of time , but it also indirectly indicates changes in elevation of the plateau in various periods . "

1996年研究报告的作者说，“青藏高原新生代动植物群落的交错分布，不仅说明了各个时期的气候环境，也间接指出了青藏高原各个时期海拔高度的变化。”