Silurian conodonts from several sections in the area of the Yangtze Platform, South China, are described and their taxonomy revised. Two new families, Pseudooneotodidae and Gamachignathidae, are erected, one new genus, Chenodontos, and ten new species and subspecies: Apsidognathus ruginosus scutatus, Chenodontos makros, Distomodus cathayensis, Oulodus tripus, Ozarkodina wangzhunia, Panderodus amplicostatus, Pterospathodus sinensis, Wurmiella amplidentata, Wurmiella curta and Wurmiella recava. are erected. Some additional new taxa are introduced in open nomenclature. The status of conodont biozonation in the Silurian of China is reviewed, and the following zones provisionally recognised to span the Llandovery succession: Ozarkodina aff. hassi Biozone; Ozarkodina obesa Biozone; Ozarkodina parahassi Biozone; Ozarkodina guizhouensis Biozone; Pterospathodus eopennatus Biozone; Pterospathodus celloni Biozone; Pterospathodus amorphognathoides Biozone. The re-assessment of conodont data indicates that unequivocal Wenlock taxa have not been recorded on the Yangtze Platform and that Wenlock marine deposits, if present, are much less extensive than previously suggested. Current conodont evidence also indicates that red beds are probably developed at three levels in the Silurian of the region: upper Aeronian to lower Telychian; upper Telychian, perhaps extending into the Wenlock; Ludlow, pre-O. crispa Biozone.
Wang Cheng-yuan and Aldridge, R. J., 2010. Silurian conodonts from the Yangtze Platform, south China. Special papers in Palaeontology, 83:1-136, with 13 Text-figs, 30 Plates and 9 Tables. The Palaeontological Associatioan, London, June 2010
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