Late Permian (Changhsingian) conodont biozonation and the basal boundary, Ganxi section, western Hubei Province, south China

Autor:	Zhang Ning, Mutwakil Nafi, Xia Wenchen
Rok vydání:	2006
Předmět:	Paleontology South china biology Permian Stage (stratigraphy) Section (archaeology) General Earth and Planetary Sciences Conodont biology.organism_classification Geology
Zdroj:	Canadian Journal of Earth Sciences. 43:121-133
ISSN:	1480-3313 0008-4077
DOI:	10.1139/e05-097
Popis:	Four neogondolellid conodont interval zones were recognized across the Changhsingian stage at Ganxi section, western Hubei Province, south China. They are in ascending order: the Clarkina wangi Zone, the Clarkina changxingensis changxingensis Zone, the Clarkina changxingensis yini Zone, and the Clarkina meishanensis meishanensis Zone. The present study suggests that the base of the Changhsingian can be defined by the first appearance datum (FAD) of Clarkina wangi within an evolutionary lineage from Clarkina longicuspidata to Clarkina wangi. The Wuchiapingian–Changhsingian boundary can be placed at the base of bed 104 at Ganxi section, south China because of the first occurrence of Clarkina wangi.
Databáze:	OpenAIRE
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