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The tectonic affinity of the North China Craton (NCC) in the early Paleozoic paleogeographic reconstructions of the Gondwana supercontinent remains controversial. Here we present new detrital zircon U–Pb age data from Middle (Sandaokan Formation) to Upper Ordovician (Lashizhong Formation) sandstone deposits from biostratigraphically well–constrained strata in the Zhuozishan Mountain area, western...
Middle Ordovician conodonts from the Sandaokan and Zhuozishan formations of the Laoshidan section at the western margin of the North China Craton, consist of 39 identified and six indeterminate species belonging to 21 genera, and three taxa left in open nomenclature at both genus and species levels. Of particular biostratigraphic importance is the presence of morphologically advanced species of Histiodella...
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