Figure 1
From: Cyanobacterial fossils from 252 Ma old microbialites and their environmental significance
Features of the spotted rock (A) and dendroid rock (B). (C): Fossils without orientation. (D): Thick dendroid rock bed and intercalated thin marl layer. Br-brown spot or patch; Gr-gray areas or patched; F-the problematic fossils, here interpreted as Microcystis colonies; Mic-rock of micrites; Mar-marl; PR-the dendroid rock.
