以下为句子列表：
英文: Biostratigraphic zonation and mark-fossil erection should be based on restoring evolutionary pedigrees or occurrence sequences, and the boundary should be confirmed at the horizon of their first appearance.
中文: 生物地层学研究一定要以恢复演化谱系或发生序列为基础，界线化石标志应该选在其“首现”层位。
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