Stratigraphic column of the Xiazhen Formation with the 18 stromatoporoid-bearing intervals

Juwan Jeon, Kun Liang, Jino Park, Stephen Kershaw & Yuandong Zhang
A diverse labechiid stromatoporoid assemblage that includes 16 species in 8 genera was found in the Upper Ordovician Xiazhen Formation (mid-late Katian) at Zhuzhai, Jiangxi Province of South China. The assemblage is characterized by a combination of: a) North China provincial species succeeding from their origination in the Darriwilian, including Pseudostylodictyon poshanense Ozaki, 1938, Labechia shanhsiensis Yabe and Sugiyama, 1930, Lb. variabilis Yabe and Sugiyama, 1930 and Labechiella regularis (Yabe and Sugiyama, 1930), and b)...
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