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Typical Hindeodus parvus and Its Significance and Discussion on P/T Boundary

Zhu Xiangshui ① Lin Liansheng ② (①Department of Science Environment and Resources,Jiangxi Normal University,Nanchang 330027②Center of Remote Sensing and Geo Information System of Jiangxi Province,Nanchang 330046)  
It was discussed that the difference between the typical and untypical Hindeodus parvus,and the perfection,richment and diversity of their fossils reserved,play an importment and reliable role in the Global Boundary Stratotype Section and Point (GSSP) in this paper.Here,author stressed that it is only possible to exactly determine the P/T biology eventostratigraphic boundary of Tethys Realm by dividing P/T boundary with the first appearance of typical H. parvus as mark which were perfect reserved,unmetamorphosed and which main cusp and denticles were preserved intact at the H. latidentatus H. parvus Isarcicella isarcica phylomorphogenetic lineage within the continuously deposited strata of carbonate rock in shallow water facies. The Dongling and Yangou sections in Jiangxi Province are all continous sediments of carbonate rock of shallow water facies from Changxing Formation to Dayie Formation and lithologic characters across them is transitional which have a special significance to make a thorough inquiry of phylomorphogenetic lineage of shallow water conodont fauna,and to bring to light the P/T bioeventostratigraphic boundary.In this two sections,the point position of the first appearance of H. parvus is in keeping with base of Dayie Formation.It seems showed that the Boundary Clay Bed in South China is not only the bio event,but also the unbio event mark.
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