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中文摘要：
陕南灯影组宽川铺段的小壳化石具完好的三维保存方式。Anabarites是三辐射对称、单管底栖群居生物,亲缘关系不明。作者通过对陕南宁强下寒武统宽川铺段进行数次系统采样,经过对样品的醋酸溶蚀处理和电子扫描电镜照像后,发现Anabarites壳体内部具螺旋状微结构;经测试分析后认为该结构可能与中槽的深浅成正相关,两者的形成可能与微环境中水体的变化有关。探讨其可能的亲缘关系及其演化序列。
英文摘要：
The well-preserved small shelly fossils recovered from the Kuanchuanpu Member of the Dengying Formation in the southern part of Shaanxi, China provide very important evidences for the studies of origin, taxonomy, pedigree evolution and developmental biology of early SSFs animals. Anabarites is a typical representative of Early Cambrian tri-symmetrical tubular benthos with unknown affinity. Our systematical sampling, acidmaceration and SEM analysis enhanced our morphological descriptions and discussions about Anabarites in details. Our work reveals that some helical microstructures of Anabarites may be correlated with the depth of longitudinal ridge, or may be related to micro-environment of water changes. Their possible affinities and evolutionary process are also discussed in this paper.
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