{"id":615400,"date":"2026-01-18T17:23:01","date_gmt":"2026-01-18T16:23:01","guid":{"rendered":"https:\/\/cronologia-universale.it\/510000000-bc\/"},"modified":"2026-01-18T17:23:01","modified_gmt":"2026-01-18T16:23:01","slug":"560-550-million-bc","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/560-550-million-bc\/","title":{"rendered":"560 &#8211; 550 million BC"},"content":{"rendered":"<p>period called the White Sea by biologist Ben Waggoner. The animals on the seabed are still without fins or legs, but there is evidence that they could move, even though their habitat is still two-dimensional: the seabed. Examples include the following species: Kinderella, Helminthoidichnites, and Spriggina. There are also the first examples of predation. And oxygen levels continue to rise.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>period called the White Sea by biologist Ben Waggoner. The animals on the seabed are&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[30],"tags":[],"class_list":["post-615400","post","type-post","status-publish","format-standard","hentry","category-b-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>560 - 550 million BC - Cronologia Universale<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cronologia-universale.it\/en\/560-550-million-bc\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"560 - 550 million BC - Cronologia Universale\" \/>\n<meta property=\"og:description\" content=\"period called the White Sea by biologist Ben Waggoner. 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