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| Description: Cheirurus sp., middle Ordovician age, Volkhov River, Russia
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| Description: Cheirurus sp., middle Ordovician age, Volkhov River, Russia
Picture Stats: Views: 885 Filesize: 190.94kB Height: 600 Width: 766 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=5514 |