Fig. 13From: Role of calcimicrobes and microbial carbonates in the Late Carboniferous (Moscovian) mounds in southern Guizhou, South ChinaThin-section photographs of oncoids and microbial ooids. a, b Oncoids from the cover layer of the Lumazhai mound; c Microbial ooids from the Zhongxinzhai mound; d The tubular calcimicrobes in the microbial ooids, indicative of a microbial genesisBack to article page