{"id":21,"date":"2018-01-10T22:00:47","date_gmt":"2018-01-10T21:00:47","guid":{"rendered":"http:\/\/baustelle.evolutionsweg.de\/?p=21"},"modified":"2025-08-18T23:16:38","modified_gmt":"2025-08-18T21:16:38","slug":"kieferbildung-der-wirbeltiere","status":"publish","type":"post","link":"https:\/\/evolutionsweg.de\/fr\/kieferbildung-der-wirbeltiere\/","title":{"rendered":"La formation de la m\u00e2choire"},"content":{"rendered":"

420 millions d\u2019ann\u00e9es jusqu\u2019\u00e0 aujourd\u2019hui
\n<\/p>\n

\u00c8re : Pal\u00e4o\u00adzoi\u00adkum\u2009\/\u2009Silur<\/p>\n

Au d\u00e9but du Silu\u00adrien, les vert\u00e9\u00adbr\u00e9s d\u00e9ve\u00adloppent des m\u00e2choires mobiles qui leur permettent de saisir, tenir et \u00e9cra\u00adser la nour\u00adri\u00adture. Cela ouvre une multi\u00adtude de nouvelles possi\u00adbi\u00adli\u00adt\u00e9s d\u2019ali\u00admen\u00adta\u00adtion pour les animaux \u00e0 m\u00e2choire. Les dents se forment \u00e0 partir d\u2019\u00e9cailles osseuses, et elles se trouvent au bord des maxilles, dans la cavit\u00e9 buccale ou a l\u2019int\u00e9rieur du pharynx. Ce d\u00e9ve\u00adlop\u00adpe\u00adment a connu un tel succ\u00e8s qu\u2019il n\u2019existe aujourd\u2019\u00adhui que deux groupes de vert\u00e9\u00adbr\u00e9s sans m\u00e2choires (les lamproies et les myxines).
\n<\/p>\n

Apr\u00e8s la fin de l\u2019\u00e8re glaciaire au d\u00e9but du Silu\u00adrien, le climat est chaud et mod\u00e9r\u00e9 avec une temp\u00e9\u00adra\u00adture moyenne d\u2019en\u00advi\u00adron 17 degr\u00e9s. Pour la premi\u00e8re fois, la concen\u00adtra\u00adtion d\u2019oxy\u00adg\u00e8ne augmente jusqu\u2019\u00e0 14 %, tandis que la concen\u00adtra\u00adtion de dioxyde de carbone tombe en dessous de 0,4 %. Les masses terrestres Lauren\u00adtie et Baltique forment le conti\u00adnent Euram\u00e9\u00adrique (Laurus\u00adsie).<\/p>\n","protected":false},"excerpt":{"rendered":"

Au d\u00e9but du Silu\u00adrien, les vert\u00e9\u00adbr\u00e9s d\u00e9ve\u00adloppent des m\u00e2choires mobiles qui leur permettent de saisir, tenir et \u00e9cra\u00adser la nour\u00adri\u00adture. Cela ouvre une multi\u00adtude de nouvelles possi\u00adbi\u00adli\u00adt\u00e9s d\u2019ali\u00admen\u00adta\u00adtion pour les animaux \u00e0 m\u00e2choire.<\/p>\n

\u2026mehr dazu<\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":3826,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"no","wp_typography_post_enhancements_disabled":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-21","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wegpunkte"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"fr","enabled_languages":["de","fr","gb","pl"],"languages":{"de":{"title":true,"content":true,"excerpt":true},"fr":{"title":true,"content":true,"excerpt":true},"gb":{"title":true,"content":true,"excerpt":true},"pl":{"title":true,"content":true,"excerpt":true}}},"modified_by":"Administrator","_links":{"self":[{"href":"https:\/\/evolutionsweg.de\/fr\/wp-json\/wp\/v2\/posts\/21","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/evolutionsweg.de\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/evolutionsweg.de\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/evolutionsweg.de\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/evolutionsweg.de\/fr\/wp-json\/wp\/v2\/comments?post=21"}],"version-history":[{"count":0,"href":"https:\/\/evolutionsweg.de\/fr\/wp-json\/wp\/v2\/posts\/21\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/evolutionsweg.de\/fr\/wp-json\/wp\/v2\/media\/3826"}],"wp:attachment":[{"href":"https:\/\/evolutionsweg.de\/fr\/wp-json\/wp\/v2\/media?parent=21"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/evolutionsweg.de\/fr\/wp-json\/wp\/v2\/categories?post=21"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/evolutionsweg.de\/fr\/wp-json\/wp\/v2\/tags?post=21"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}