{"id":2841,"date":"2021-09-14T11:09:06","date_gmt":"2021-09-14T09:09:06","guid":{"rendered":"https:\/\/muzeumewolucji.pl\/?p=2841"},"modified":"2022-05-10T13:56:22","modified_gmt":"2022-05-10T11:56:22","slug":"the-concept-of-heteromorph-ammonoids","status":"publish","type":"post","link":"https:\/\/muzeumewolucji.pl\/?p=2841&lang=en","title":{"rendered":"The concept of \u2018heteromorph ammonoids\u2019"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2841\" class=\"elementor elementor-2841\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1dc282d7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1dc282d7\" 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-19a4b942\" data-id=\"19a4b942\" 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-4d987c3e elementor-widget elementor-widget-heading\" data-id=\"4d987c3e\" 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\">The concept of \u2018heteromorph ammonoids\u2019<\/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-fe039be elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fe039be\" 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-9ca215b\" data-id=\"9ca215b\" 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-b47bf87 elementor-widget elementor-widget-text-editor\" data-id=\"b47bf87\" 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 align=\"JUSTIFY\"><img fetchpriority=\"high\" decoding=\"async\" data-recalc-dims=\"1\" class=\" wp-image-2680 alignright\" src=\"https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2021\/09\/Landman-Machalski-and-Whalen-2021-NA-FB-.jpg?resize=514%2C514&#038;ssl=1\" alt=\"\" width=\"514\" height=\"514\" srcset=\"https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2021\/09\/Landman-Machalski-and-Whalen-2021-NA-FB-.jpg?w=1200&amp;ssl=1 1200w, https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2021\/09\/Landman-Machalski-and-Whalen-2021-NA-FB-.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2021\/09\/Landman-Machalski-and-Whalen-2021-NA-FB-.jpg?resize=1024%2C1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2021\/09\/Landman-Machalski-and-Whalen-2021-NA-FB-.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2021\/09\/Landman-Machalski-and-Whalen-2021-NA-FB-.jpg?resize=768%2C769&amp;ssl=1 768w\" sizes=\"(max-width: 514px) 100vw, 514px\" \/><\/p><p align=\"JUSTIFY\"><span style=\"font-size: large;\">The ammonoids are extinct cephalopods with predominantly planispirally-coiled shells. The term \u2018heteromorph ammonoids\u2019 is deeply rooted in literature to ecompass \u2018aberrant\u2019 ammonoids (for instance scaphitids) characterized by shells uncoiled in various ways. At one time such forms were considered to be a sign of degeneration foreshadowing the extinction of these cephalopods. Today we know that this was not the case. Actually, \u2018heteromorph ammonoids\u2019 are a heterogeneous mixture of taxa without any phylogenetic, morphological or ecological coherence. The term no longer has any explanatory power. For this reason, we think it makes no sense any further to consider the \u2018heteromorphs\u2019 as a single entity in palaeobiological studies. <\/span><\/p><p align=\"JUSTIFY\"><span style=\"font-size: large;\">Work partially financed by the National Science Centre, Poland (Grant 2015\/19\/B\/ST10\/02033).<\/span><\/p><p align=\"JUSTIFY\">\u00a0<\/p><p align=\"JUSTIFY\">\u00a0<\/p><p align=\"JUSTIFY\">&#8212;<\/p><p align=\"JUSTIFY\"><span style=\"font-size: large;\">Scaphitid ammonoids are the well-known group of Late Cretaceous \u2018heteromorphs\u2019. The illustration shows evolution of a latest Cretaceous scaphitid lineage; note a tendency to \u2018recoil\u2019 the shells with time (after Landman et al., 2021, fig. 2).<\/span><\/p><p align=\"JUSTIFY\"><span style=\"font-size: large;\">\u00a0<\/span><\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1ba938c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1ba938c\" 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-fd8e78f\" data-id=\"fd8e78f\" 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-7446302 elementor-widget elementor-widget-text-editor\" data-id=\"7446302\" 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 align=\"JUSTIFY\"><span style=\"font-size: large;\"><b>PUBLICATION <\/b>\u2014 Landman, N. H., <a href=\"http:\/\/www.paleo.pan.pl\/pl\/pracownicy\/machalski\/marcin_machalski.html\">Machalski, M.<\/a>, &amp; Whalen, C. D. 2021. The concept of \u2018heteromorph ammonoids\u2019. Lethaia, <a href=\"https:\/\/doi.org\/10.1111\/let.12443\">https:\/\/doi.org\/10.1111\/let.12443<\/a>.<\/span><\/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<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2eefacb elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2eefacb\" 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-5704831\" data-id=\"5704831\" 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-8b4494f elementor-widget elementor-widget-spacer\" data-id=\"8b4494f\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\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>The ammonoids are extinct cephalopods with predominantly planispirally-coiled shells. The term \u2018heteromorph ammonoids\u2019 is deeply rooted in literature to ecompass \u2018aberrant\u2019 ammonoids&#8230;<\/p>\n","protected":false},"author":3,"featured_media":2680,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[93],"tags":[],"class_list":["post-2841","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 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The concept of \u2018heteromorph ammonoids\u2019 - 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=2841&lang=en\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The concept of \u2018heteromorph ammonoids\u2019 - Muzeum Ewolucji Instytutu Paleobiologii PAN\" \/>\n<meta property=\"og:description\" content=\"The ammonoids are extinct cephalopods with predominantly planispirally-coiled shells. 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The term \u2018heteromorph ammonoids\u2019 is deeply rooted in literature to ecompass \u2018aberrant\u2019 ammonoids...","og_url":"https:\/\/muzeumewolucji.pl\/?p=2841&lang=en","og_site_name":"Muzeum Ewolucji Instytutu Paleobiologii PAN","article_published_time":"2021-09-14T09:09:06+00:00","article_modified_time":"2022-05-10T11:56:22+00:00","og_image":[{"width":1200,"height":1201,"url":"https:\/\/muzeumewolucji.pl\/wp-content\/uploads\/2021\/09\/Landman-Machalski-and-Whalen-2021-NA-FB-.jpg","type":"image\/jpeg"}],"author":"Agnieszka K.","twitter_card":"summary_large_image","twitter_misc":{"Napisane przez":"Agnieszka K.","Szacowany czas czytania":"2 minuty"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/muzeumewolucji.pl\/?p=2841&lang=en#article","isPartOf":{"@id":"https:\/\/muzeumewolucji.pl\/?p=2841&lang=en"},"author":{"name":"Agnieszka K.","@id":"https:\/\/muzeumewolucji.pl\/#\/schema\/person\/71a186d6f255ae6d2725b8c048ab5eb7"},"headline":"The concept of \u2018heteromorph ammonoids\u2019","datePublished":"2021-09-14T09:09:06+00:00","dateModified":"2022-05-10T11:56:22+00:00","mainEntityOfPage":{"@id":"https:\/\/muzeumewolucji.pl\/?p=2841&lang=en"},"wordCount":183,"publisher":{"@id":"https:\/\/muzeumewolucji.pl\/#organization"},"image":{"@id":"https:\/\/muzeumewolucji.pl\/?p=2841&lang=en#primaryimage"},"thumbnailUrl":"https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2021\/09\/Landman-Machalski-and-Whalen-2021-NA-FB-.jpg?fit=1200%2C1201&ssl=1","articleSection":["Science News"],"inLanguage":"pl-PL"},{"@type":"WebPage","@id":"https:\/\/muzeumewolucji.pl\/?p=2841&lang=en","url":"https:\/\/muzeumewolucji.pl\/?p=2841&lang=en","name":"The concept of \u2018heteromorph ammonoids\u2019 - 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