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| Description: Cambrian trilobite, with a shell made of calcium carbonate.
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| Description: Cambrian trilobite, with a shell made of calcium carbonate.
Picture Stats: Views: 1206 Filesize: 13.96kB Height: 255 Width: 300 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=2334 |