INTERNAL MICROSTRUCTURE AND AFFILIATION OF THE LOWER CAMBRIAN ANABARITES FROM SOUTHERN SHAANXI,CHINA
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Abstract:
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,acid-maceration 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.
