菊石化石
- 网络ammonite fossil
菊石化石-
菊石化石在8000英尺高的山上，有力的证明该地区曾经在海下。
Ammonites , on the side 8000 feet high , are evidence that the area was once under the sea .
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黔南平塘晚二叠世大隆组的层状硅质岩分布稳定，厚度一般为几十米，富含数量不等的菊石和腕足化石。
Silicalite of the Upper Permian Dalong Formation in Pingtang , south Guizhou has a stable horizon with a thickness of tens meters , yielding abundant ammonites and Brachiopoda .