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1 August 2013 UPPERMOST PERMIAN TO LOWER TRIASSIC CONODONTS AT BIANYANG SECTION, GUIHZOU PROVINCE, SOUTH CHINA
CHUNBO YAN, LINA WANG, HAISHUI JIANG, PAUL B. WIGNALL, YADONG SUN, YANLONG CHEN, XULONG LAI
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Abstract

A new conodont biostratigraphic study is presented from a key section on the flanks of the Permian-Triassic Great Bank of Guizhou, an isolated carbonate platform from South China, that has recently provided much key data for understanding the nature of this mass extinction interval. Detailed investigation at Bianyang (Guizhou Province) has revealed ten conodont zones, in ascending order: Clarkina yini Zone; Hindeodus changxingensis Zone; Hindeodus parvus Zone; Sweetospathodus kummeli Zone; Neospathodus dieneri Zone; Neospathodus cristagalli Zone; Discretella discreta Zone; Pachycladina-Parachirognathus assemblage zone; Icriospathodus collinsoni Zone; Triassospathodus homeri Zone. This allowed the Permian-Triassic boundary (PTB) to be defined in the section based on the first occurrence of Hindeodus parvus. Furthermore, it is proposed that the first occurrence of Discretella discreta can be used as an auxiliary reference for defining the Induan-Olenekian boundary when Novispathodus waageni is absent both at Bianyang and elsewhere.

SEPM (Society for Sedimentary Geology)
CHUNBO YAN, LINA WANG, HAISHUI JIANG, PAUL B. WIGNALL, YADONG SUN, YANLONG CHEN, and XULONG LAI "UPPERMOST PERMIAN TO LOWER TRIASSIC CONODONTS AT BIANYANG SECTION, GUIHZOU PROVINCE, SOUTH CHINA," PALAIOS 28(8), 509-522, (1 August 2013). https://doi.org/10.2110/palo.2012.p12-077r
Accepted: 1 April 2013; Published: 1 August 2013
JOURNAL ARTICLE
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