{"id":8814,"date":"2026-01-12T11:39:06","date_gmt":"2026-01-12T10:39:06","guid":{"rendered":"https:\/\/muzeumewolucji.pl\/?p=8814"},"modified":"2026-01-12T11:51:58","modified_gmt":"2026-01-12T10:51:58","slug":"enigmatic-microfossils-from-southern-poland","status":"publish","type":"post","link":"https:\/\/muzeumewolucji.pl\/?p=8814&lang=en","title":{"rendered":"Enigmatic microfossils from southern Poland"},"content":{"rendered":"\t\t
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Enigmatic microfossils from southern Poland<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Spirotubus <\/em>are puzzling microfossils<\/a> from southern Poland, dating from the Devonian<\/a> period, around 380 million years ago. The Spirotubus<\/em> skeletons are tiny calcareous (calcitic<\/a>) tubes with a spiral pattern on their outer surface. The organisms that built these skeletons lived in shallow, isolated marine lagoons<\/a>, where the water was highly saturated with calcium carbonate, which likely facilitated the formation of their massive skeleton. We do not know<\/a> what kind of organisms formed these fossils: Spirotubus<\/em> does not resemble any known modern or fossil species.<\/p>

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Illustration: Various microstructures of Spirotubus<\/em> carbonate skeletons under a scanning microscope.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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PUBLICATION:<\/strong> Racki, G. and Kremer, B.<\/a> 2025. Deciphering Spirotubus<\/em>: new observations and palaeobiological interpretations of an enigmatic Devonian microfossil from Poland. Lethaia 58, ISS. 2, pp 1-17.<\/a>. doi: 10.18261\/let.58.2.4<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Spirotubus are puzzling microfossils from southern Poland, dating from the Devonian period, around 380 million years ago. <\/p>\n","protected":false},"author":3,"featured_media":8781,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[93],"tags":[],"class_list":["post-8814","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sc_news"],"yoast_head":"\nEnigmatic microfossils from southern Poland - Muzeum Ewolucji Instytutu Paleobiologii PAN<\/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:\/\/muzeumewolucji.pl\/?p=8814&lang=en\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Enigmatic microfossils from southern Poland - 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