The ichnofacies is the grouping of characteristic trace fossil association tending to rscirrence through a rather long interval of geologic time,and their environmental implication.
相是指一组具有特征石组合,在一段相当长地时期中不断重视以及它境意义。
The ichnofacies is the grouping of characteristic trace fossil association tending to rscirrence through a rather long interval of geologic time,and their environmental implication.
相是指一组具有特征石组合,在一段相当长地时期中不断重视以及它境意义。
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