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Two-dimensional diagram of microbial mat structures. The thick lines represent the thicker cyanobacterial filaments (Oscillatoriales and Nostocales), and the thin lines represent Leptolyngbya. The filaments are drawn parallel to the surface in order to simplify the diagram, but filaments are also oriented perpendicular to the surface. The drawings are not to scale in order to show the structural differences between the mats.
