Upper Devonian conodont fauna from Western Hubei, China and its significance

Pelagic standard conodont biozonation is less applicable to nearshore shallow-water depositional settings close the peritidal, where it needed establish its own zonation. The Upper Devonian Xiejingsi Formation in South China an important unit for biostratigraphy investigation as deposits argillaceous-carbonate mixed facies which yield numerous marine fossils. 25 species belonging 6 genera of platform elements were described four sections this formation western Hubei, including 9 new species. Based on distribution these sections, six biozones are introduced ascending order: Polygnathus brevis – Polynodosus changyangensis sp. nov. Assemblage Zone, Icriodus cornutus Pelekysgnathus arcuatus brevilaminus Palmatolepis angulata quadrantinodosalobata Zone and planirostratus Zone. correlation with those pelagic ones indicates age Hubei from at least Frasnian linguiformis Famennian Lower rhomboidea Through constructing based establishment comprehensive succession, paper provides a case study high-resolution settings.