【摘要】 <正> 遗迹化石是古代生物在底层内或底层层面上进行钻穴、行走、栖息、览食、逃跑、隐伏等活动时留下的遗迹。它是化石记录的一部分,也是古生物学组成部分。因此,在地层学及沉积学方面都有一定的意义。 一 生物遗迹化石的地层学意义 遗迹化石在地层学上的用途很多。它包括:作为对比地层的标准化石;确定地层的顶、底面;确定地层的压实程度;确定实体化石出现之前的寒武纪(或显生宙)的真实下界。更多还原

【Abstract】 Extremely abundant biogenic trace foosils exist within the sediments of all kinds from Late Precambrian to Presentday.ln respect of stratigraphy and sedi-mentology, it is quite meaningful to study them.In addition, trace fossils could. 1.Indicate compactness of sedimentary rocks, 2.Provide some clues to the drrectinns of ancient water currents during sedimentation and, 3.Be used to determine the top and bottom surfaces of rock formation.In this paper, implications of trace fossils are discussed with stress on their application to stratigraphy and sedrmentigraphy and sedimentology.更多还原