A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China Author Leu, Marc Paleontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland Author Bucher, Hugo Paleontological Institute and Museum, University of Zurich, Karl-Schmid-Strasse 4, 8006 Zurich, Switzerland Author Vennemann, Torsten Author Bagherpour, Borhan Author Ji, Cheng Author Brosse, Morgane Author Goudemand, Nicolas text Swiss Journal of Palaeontology 2022 19 2022-11-22 141 1 1 61 http://dx.doi.org/10.1186/s13358-022-00259-x journal article 10.1186/s13358-022-00259-x 1664-2384 PMC9681704 36439694 12000082 Urdyella n. sp. A Fig. 26 AE Number of specimens . 1 Remarks . Tis one specimen does look like it may belong to Urdyella and it was found within the Smithian range of Urdyella , but it differs in its posterior configuration and in having a smaller cusp. Occurrence. Laren road cut, Luolou Formation, Smithian age, Nanpanjiang basin, South China (this paper).