Summary analysis of the records with basisOfRecord recorded as FossilSpecimens, with the number of unique values found in each targeted Darwin Core field and the number of chronometry-related values found within each field.

Summary analysis of the records with basisOfRecord recorded as FossilSpecimens, with the number of unique values found in each targeted Darwin Core field and the number of chronometry-related values found within each field.针对记录基础（basisOfRecord）标注为化石标本（FossilSpecimens）的记录开展汇总分析，统计各目标达尔文核心（Darwin Core）字段中存在的唯一值数量，以及各字段内包含的年代学相关值的数量。