Abstract
A detailed study of new conodont collections from the Changxing Formation at the Meishan section has resulted in taxonomic refinement of several important neogondolellid species. Most of the previously erected species are much more strictly redefined, mainly based on the denticulation of the holotypes, and the stratigraphic ranges attributed to key conodont taxa are modified. Three new species and two new subspecies, all of which are form-species, are tentatively erected and described mainly for the purpose of taxonomic explanation. As a result of the taxonomic refinement, six neogondolellid conodont zones are recognized for the Changxing Formation and the Permian–Triassic boundary interval.
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