{"id":8916,"date":"2026-01-22T13:00:13","date_gmt":"2026-01-22T12:00:13","guid":{"rendered":"https:\/\/muzeumewolucji.pl\/?p=8916"},"modified":"2026-01-22T13:04:11","modified_gmt":"2026-01-22T12:04:11","slug":"ammonites-survived-across-the-cretaceous-paleogene-boundary","status":"publish","type":"post","link":"https:\/\/muzeumewolucji.pl\/?p=8916&lang=en","title":{"rendered":"Ammonites survived across the Cretaceous\u2013Paleogene boundary"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"8916\" class=\"elementor elementor-8916\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-42e6ab6f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"42e6ab6f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2d76defc\" data-id=\"2d76defc\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d2e5fcf elementor-widget elementor-widget-heading\" data-id=\"d2e5fcf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Ammonites survived across the Cretaceous\u2013Paleogene boundary<\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-95bf373 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"95bf373\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-18b4be22\" data-id=\"18b4be22\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4a26d6cd elementor-widget elementor-widget-text-editor\" data-id=\"4a26d6cd\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><img fetchpriority=\"high\" decoding=\"async\" data-recalc-dims=\"1\" class=\"wp-image-8902 alignright\" src=\"https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2026\/01\/Mach_Ammonite_2025-97c577b8.jpg?resize=500%2C364&#038;ssl=1\" alt=\"\" width=\"500\" height=\"364\" srcset=\"https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2026\/01\/Mach_Ammonite_2025-97c577b8.jpg?w=686&amp;ssl=1 686w, https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2026\/01\/Mach_Ammonite_2025-97c577b8.jpg?resize=300%2C219&amp;ssl=1 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p><div class=\"ce_text block\"><p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Ammonoidea\" target=\"_blank\" rel=\"noopener\">Ammonites<\/a>, extinct <a href=\"https:\/\/en.wikipedia.org\/wiki\/Cephalopod\" target=\"_blank\" rel=\"noopener\">cephalopods<\/a> dominant in <a href=\"https:\/\/en.wikipedia.org\/wiki\/Mesozoic\" target=\"_blank\" rel=\"noopener\">Mesozoic<\/a> marine ecosystems, are often listed amongst victims of the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Cretaceous\u2013Paleogene_extinction_event\" target=\"_blank\" rel=\"noopener\">end-Cretaceous mass extinction<\/a> (66 Ma). Claims of their local survival across the Cretaceous\u2013Paleogene boundary have faced scepticism from parts of the palaeontological community. This study provides strong evidence, based on <a href=\"https:\/\/en.wikipedia.org\/wiki\/Taphonomy\" target=\"_blank\" rel=\"noopener\">taphonomic<\/a> and <a href=\"https:\/\/en.wikipedia.org\/wiki\/Sedimentology\" target=\"_blank\" rel=\"noopener\">sedimentological<\/a> analyses, that ammonites preserved in the lowermost <a href=\"https:\/\/en.wikipedia.org\/wiki\/Paleogene\" target=\"_blank\" rel=\"noopener\">Paleogene<\/a> deposits in Denmark, survived for at least tens of thousands of years after the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Chicxulub_crater\" target=\"_blank\" rel=\"noopener\">Chicxulub<\/a> impact, thought to have triggered the extinction. This opens new avenues of research, raising questions about what actually killed the last ammonites.<\/p><p>Figure:\u00a0Ammonite specimens representing the genera <em>Baculites<\/em> (a, b, e, f), <em>Fresvillia<\/em> (c, d), and <em>Hoploscaphites<\/em> (g) from lower Danian deposits exposed at Stevns Klint, Denmark (see Fig. 3 in Machalski et al. 2025). <a href=\"https:\/\/en.wikipedia.org\/wiki\/Prasinophyte\" target=\"_blank\" rel=\"noopener\">Prasinophytes<\/a> belong to the green algae.<\/p><p><strong>Press releases:<\/strong><br \/>Science <a href=\"https:\/\/www.science.org\/content\/article\/against-all-odds-curious-sea-creature-survived-dino-killing-asteroid\" target=\"_blank\" rel=\"noopener\">Against all odds, a curious sea creature survived the dino-killing asteroid<\/a><\/p><\/div>\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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-62c7e422 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"62c7e422\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-65b35687\" data-id=\"65b35687\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1527b566 elementor-widget elementor-widget-text-editor\" data-id=\"1527b566\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong>PUBLICATION:<\/strong> <a href=\"https:\/\/www.paleo.pan.pl\/pl\/Machalski.html\" target=\"_blank\" rel=\"noopener\">Machalski, M.<\/a>, Olszewska-Nejbert, D., Landman, N.H., Jagt, J.W.M., Garb, M., Mil\u00e0n, J. 2025. Ammonite survival across the Cretaceous\u2013Paleogene boundary confirmed by new data from Denmark. <a href=\"https:\/\/www.nature.com\/articles\/s41598-025-34479-1\" target=\"_blank\" rel=\"noopener\"><em>Scientific Reports<\/em> 15,45802 (2025)<\/a>. doi: 10.1038\/s41598-025-34479-1<\/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\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Ammonites, extinct cephalopods dominant in Mesozoic marine ecosystems, are often listed amongst victims of the end-Cretaceous mass extinction (66 Ma).<\/p>\n","protected":false},"author":3,"featured_media":8902,"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-8916","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sc_news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - 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