{"id":35033,"date":"2022-11-13T17:19:49","date_gmt":"2022-11-13T17:19:49","guid":{"rendered":"https:\/\/www.africa-press.net\/tchad\/politique\/un-lac-fossile-datant-de-260-millions-dannees-decouvert-en-afrique-du-sud"},"modified":"2022-11-13T17:50:04","modified_gmt":"2022-11-13T17:50:04","slug":"un-lac-fossile-datant-de-260-millions-dannees-decouvert-en-afrique-du-sud","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/un-lac-fossile-datant-de-260-millions-dannees-decouvert-en-afrique-du-sud","title":{"rendered":"Un lac fossile datant de 260 millions d\u2019ann\u00e9es d\u00e9couvert en Afrique du Sud"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Tchad. <\/strong><\/span>Des libellules, de grandes cigales, des plantes fossilise\u0301es&#8230; Ces de\u0301couvertes d\u2019espe\u0300ces plus anciennes que les dinosaures ont e\u0301te\u0301 faites en Afrique du Sud au sein d\u2019un lac. D\u2019une richesse et d\u2019une diversite\u0301 exceptionnelles, elles e\u0301taient conserve\u0301es en bon e\u0301tat.<\/p>\n<p>En Afrique du Sud, un groupe international de chercheurs a de\u0301couvert un ancien lac qui date de 260 millions d\u2019anne\u0301es et qui contient toujours des plantes et des insectes fossiles.<\/p>\n<p>Ces se\u0301diments de l\u2019a\u0302ge permien, avant celui des dinosaures, ont e\u0301te\u0301 retrouve\u0301s en tre\u0300s bon e\u0301tat, dans la re\u0301gion du Karoo, dans la province du Cap Nord:<\/p>\n<p>\u00ab\u00a0On n&rsquo;avait jamais vu c\u0327a pour cette pe\u0301riode-la\u0300. C\u2019est c\u0327a qui est exceptionnel\u00a0\u00bb, s&rsquo;est fe\u0301licite\u0301 Romain Garrouste, pale\u0301o-entomologiste du Muse\u0301um national d&rsquo;histoire naturelle, cite\u0301 par Radio France.<\/p>\n<p>Certaines de\u0301couvertes ont e\u0301te\u0301 conserve\u0301es en 3D, de\u0301taille Andre\u0301 Nel, professeur au Museum d&rsquo;histoire naturelle de Paris, aupre\u0300s de RFI.<\/p>\n<p>D\u2019autres fouilles envisage\u0301es<\/p>\n<p>Les e\u0301tudes n\u2019e\u0301tant pas finalise\u0301es, les chercheurs envisagent de les poursuivre et tablent sur la possibilite\u0301 de retrouver \u00ab\u00a0des libellules ge\u0301antes par exemple, de 50, 60 cm d\u2019envergure\u00a0\u00bb, a sugge\u0301re\u0301 M.Garrouste. Les re\u0301sultats pre\u0301liminaires ont e\u0301te\u0301 publie\u0301s dans la revue Nature.<\/p>\n<p>Ces recherches pourront aider a\u0300 mieux comprendre comment vivaient les espe\u0300ces a\u0300 l\u2019e\u0301poque d\u2019un seul me\u0301gacontinent baptise\u0301 Pange\u0301e dont le climat e\u0301tait de 2,5 a\u0300 3 degre\u0301s plus chaud qu\u2019aujourd\u2019hui. Une pe\u0301riode qui s\u2019est termine\u0301e par la grande extinction ayant touche\u0301 96% des espe\u0300ces marines et les trois quarts des espe\u0300ces terrestres.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/tchad\">Tchad<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Tchad. Des libellules, de grandes cigales, des plantes fossilise\u0301es&#8230; Ces de\u0301couvertes d\u2019espe\u0300ces plus anciennes que les dinosaures ont e\u0301te\u0301 faites en Afrique du Sud au sein d\u2019un lac. D\u2019une richesse et d\u2019une diversite\u0301 exceptionnelles, elles e\u0301taient conserve\u0301es en bon e\u0301tat. En Afrique du Sud, un groupe international de chercheurs a de\u0301couvert un ancien [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":35032,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[37,292,29],"class_list":["post-35033","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-tchad","tag-tchad"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Un lac fossile datant de 260 millions d\u2019ann\u00e9es d\u00e9couvert en Afrique du Sud - tchad<\/title>\n<meta name=\"description\" content=\"Des libellules, de grandes cigales, des plantes fossilise\u0301es... 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