{"id":9516,"date":"2026-07-08T13:46:42","date_gmt":"2026-07-08T11:46:42","guid":{"rendered":"https:\/\/muzeumewolucji.pl\/?p=9516"},"modified":"2026-07-08T13:48:04","modified_gmt":"2026-07-08T11:48:04","slug":"species-concept-in-palaeontology","status":"publish","type":"post","link":"https:\/\/muzeumewolucji.pl\/?p=9516&lang=en","title":{"rendered":"Species concept in palaeontology"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"9516\" class=\"elementor elementor-9516\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-218dc218 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"218dc218\" 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-3d158efd\" data-id=\"3d158efd\" 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-6a55d226 elementor-widget elementor-widget-heading\" data-id=\"6a55d226\" 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\">Species concept in palaeontology<\/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-79445ccc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"79445ccc\" 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-40549e31\" data-id=\"40549e31\" 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-76750c17 elementor-widget elementor-widget-text-editor\" data-id=\"76750c17\" 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><a href=\"https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2026\/07\/Pachy_2026-5bb8b5f0.jpg?ssl=1\"><img fetchpriority=\"high\" decoding=\"async\" data-recalc-dims=\"1\" class=\"alignright wp-image-9509\" src=\"https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2026\/07\/Pachy_2026-5bb8b5f0.jpg?resize=500%2C312&#038;ssl=1\" alt=\"&quot;Mapa Danii z lokalizacj\u0105 badanych stanowisk oraz ilustracja amonita z obja\u015bnieniami termin\u00f3w morfologicznych i graficzna rekonstrukcja muszli amonita\" width=\"500\" height=\"312\" srcset=\"https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2026\/07\/Pachy_2026-5bb8b5f0.jpg?w=801&amp;ssl=1 801w, https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2026\/07\/Pachy_2026-5bb8b5f0.jpg?resize=300%2C187&amp;ssl=1 300w, https:\/\/i0.wp.com\/muzeumewolucji.pl\/wp-content\/uploads\/2026\/07\/Pachy_2026-5bb8b5f0.jpg?resize=768%2C479&amp;ssl=1 768w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/a>Principles of species identification in fossil material are a fundamental problem in palaeontology. This paper illustrates the issue through a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Taxonomy_(biology)\" target=\"_blank\" rel=\"noopener\">taxonomic<\/a> analysis of a collection of <a href=\"https:\/\/en.wikipedia.org\/wiki\/Ammonoidea\" target=\"_blank\" rel=\"noopener\">ammonites<\/a> of the <em>Pachydiscus neubergicus<\/em> group from the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Maastrichtian\" target=\"_blank\" rel=\"noopener\">Maastrichtian<\/a> <a href=\"https:\/\/en.wikipedia.org\/wiki\/Chalk\" target=\"_blank\" rel=\"noopener\">chalk<\/a> of Denmark. The specimens are <a href=\"https:\/\/en.wikipedia.org\/wiki\/Endocast\" target=\"_blank\" rel=\"noopener\">internal moulds<\/a> representing different ontogenetic stages, which, combined with the small sample size and the lack of precise <a href=\"https:\/\/en.wikipedia.org\/wiki\/Stratigraphy\" target=\"_blank\" rel=\"noopener\">stratigraphic<\/a> control, prevents effective application of the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Population\" target=\"_blank\" rel=\"noopener\">population<\/a>-based species concept. A conventional interpretation is presented: the material is divided into several species (morphospecies); however, it is likely that the analyzed individuals belonged to a single, morphologically highly variable biological species.<\/p><p>Figure: A. Danish localities which yielded studied ammonites of the <em>Pachydiscus neubergicus<\/em> group. B. Morphology and measurement of a <em>P. neubergicus<\/em> specimen.<\/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-2376525 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2376525\" 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-1f0896f4\" data-id=\"1f0896f4\" 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-b31a164 elementor-widget elementor-widget-text-editor\" data-id=\"b31a164\" 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>, <a href=\"https:\/\/www.paleo.pan.pl\/pl\/Owocki.html\" target=\"_blank\" rel=\"noopener\">Owocki, K.<\/a>, Rasmussen, J.A. and Madsen, H. 2026. Ammonites of the <em>Pachydiscus neubergicus<\/em> group from the mid-Maastrichtian chalk of Denmark: alternative taxonomic interpretations. <a href=\"https:\/\/journals.pan.pl\/dlibra\/publication\/158184\/edition\/138512\/content\" target=\"_blank\" rel=\"noopener\"><em>Acta Geologica Polonica<\/em>, 76 (1), e70<\/a>. doi.org\/10.24425\/agp.2026.158184<\/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>Principles of species identification in fossil material are a fundamental problem in palaeontology. <\/p>\n","protected":false},"author":3,"featured_media":9509,"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-9516","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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