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| Description: Artist’s depiction of stromatolites. The surface of each stromatolite consists of a mat of living photosynthetic bacteria. Beneath it are layers of earlier generations of bacteria that trapped sediment and precipitated minerals. Picture Stats: Views: 64 Filesize: 199.96kB Height: 1027 Width: 1500 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=48446 |