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Fig. 8 | Journal of Palaeogeography

Fig. 8

From: Role of calcimicrobes and microbial carbonates in the Late Carboniferous (Moscovian) mounds in southern Guizhou, South China

Fig. 8

Thin-section photographs of Girvanella and Ortonella. a Girvanella boundstone with micritic texture colonized by tubular thalli (white arrow) and the clotted micrite (black arrow); b Girvanella-like organisms bore shell: the thalli in the shell (black arrow) and encrusting the shell (white arrow); c Transection of Ortonella: tubes were filled of microsparry or sparry calcite (white arrow); d Longitudinal section of Ortonella, showing closely-packet tubes (white arrow)

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