{"id":68978,"date":"2025-06-06T12:00:00","date_gmt":"2025-06-06T12:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/bebes-anciens-reecrivent-histoire-des-premiers-humains"},"modified":"2025-06-07T00:19:56","modified_gmt":"2025-06-07T00:19:56","slug":"bebes-anciens-reecrivent-histoire-des-premiers-humains","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/bebes-anciens-reecrivent-histoire-des-premiers-humains","title":{"rendered":"B\u00e9b\u00e9s Anciens R\u00e9\u00e9crivent Histoire des Premiers Humains"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>Ces trois nourrissons, morts il y a pre\u0300s de deux millions d\u2019anne\u0301es, n\u2019ont laisse\u0301 derrie\u0300re eux que de minuscules fragments de leurs ma\u0302choires. Et pourtant, ces restes fossiles rebattent les cartes des de\u0301buts de l\u2019humanite\u0301. Dans une e\u0301tude publie\u0301e le 3 juin 2025 dans la revue Nature Communications, Jose\u0301 Braga, chercheur a\u0300 l\u2019Universite\u0301 de Toulouse, et Jacopo Moggi-Cecchi, pale\u0301oanthropologue a\u0300 Florence (Italie), de\u0301voilent une autre facette de notre histoire.<\/p>\n<p><b>Chacun sa fac\u0327on de se de\u0301velopper<\/b><\/p>\n<p>Les trois restes ont e\u0301te\u0301 retrouve\u0301s sur deux sites africains cle\u0301s pour les pale\u0301ontologues: l\u2019un en E\u0301thiopie, dans la valle\u0301e de l\u2019Omo, attribue\u0301 a\u0300 Homo habilis ; les deux autres en Afrique du Sud, a\u0300 Kromdraai et Drimolen, tous deux apparente\u0301s a\u0300 une forme archai\u0308que d\u2019Homo erectus. Rien que du tre\u0300s classique, sur le papier. Sauf que les individus sont des be\u0301be\u0301s, et que ce de\u0301tail change tout. \u00ab Ces fossiles sont cruciaux parce qu\u2019on en trouve rarement a\u0300 cet a\u0302ge-la\u0300 \u00bb, explique dans un communique\u0301 Jose\u0301 Braga. \u00ab Et ce sont justement eux qui permettent de comprendre comment ces petits humains grandissaient, ce qu\u2019on ne peut pas vraiment observer chez les adultes \u00bb.<\/p>\n<p>En observant la forme des os, la disposition des bourgeons dentaires, la manie\u0300re dont la ma\u0302choire s\u2019e\u0301largit avec l\u2019a\u0302ge, les chercheurs ont constate\u0301 des diffe\u0301rences nettes entre ces trois enfants. Chacun semble avoir suivi un mode de de\u0301veloppement bien distinct, de\u0300s les premie\u0300res semaines de vie. Un peu comme si, de\u0300s la naissance, plusieurs versions du genre humain exploraient diverses fac\u0327ons de se de\u0301velopper. \u00ab Les diffe\u0301rences dans les structures dentaires et osseuses sont visibles de\u0300s les premiers mois \u00bb, insiste Jose\u0301 Braga, qui fouille le site de Kromdraai depuis plusieurs anne\u0301es.<\/p>\n<p><b>Un buisson aux nombreuses branches<\/b><\/p>\n<p>Ce constat, appuye\u0301 par des reconstitutions 3D, renforce une ide\u0301e de plus en plus partage\u0301e: l\u2019e\u0301volution du genre Homo n\u2019a pas e\u0301te\u0301 un long fleuve tranquille. Au contraire, elle aurait e\u0301te\u0301 jalonne\u0301e de bifurcations, de cohabitations, de voies sans issue. Pluto\u0302t qu\u2019un tronc unique, l\u2019arbre de notre famille aurait ressemble\u0301 a\u0300 un buisson touffu avec des rameaux qui se croisent et d\u2019autres qui s\u2019e\u0301teignent. \u00ab Il y avait plus de branches qu\u2019on ne le pensait \u00bb, re\u0301sume Jacopo Moggi-Cecchi.<\/p>\n<p>L\u2019un des apports majeurs de cette e\u0301tude est de remettre la petite enfance au centre des recherches pale\u0301oanthropologiques. Trop longtemps, l\u2019e\u0301volution humaine a e\u0301te\u0301 raconte\u0301e a\u0300 travers des cra\u0302nes d\u2019adultes. Or, c\u2019est souvent dans les premie\u0300res anne\u0301es de vie que se re\u0301ve\u0300lent les strate\u0301gies biologiques adopte\u0301es par une espe\u0300ce: dure\u0301e de croissance, alimentation, rythme de de\u0301veloppement. Et la\u0300, ces trois nourrissons racontent une histoire plus complexe que pre\u0301vu.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <span style=\"color: #ff6600\">Senegal<\/span>, suivez <span style=\"color: #ff6600\">Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Senegal. Ces trois nourrissons, morts il y a pre\u0300s de deux millions d\u2019anne\u0301es, n\u2019ont laisse\u0301 derrie\u0300re eux que de minuscules fragments de leurs ma\u0302choires. Et pourtant, ces restes fossiles rebattent les cartes des de\u0301buts de l\u2019humanite\u0301. Dans une e\u0301tude publie\u0301e le 3 juin 2025 dans la revue Nature Communications, Jose\u0301 Braga, chercheur a\u0300 [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":68977,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[44],"class_list":["post-68978","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-senegal-2"],"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>B\u00e9b\u00e9s Anciens R\u00e9\u00e9crivent Histoire des Premiers Humains - Senegal<\/title>\n<meta name=\"description\" content=\"Ces trois nourrissons, morts il y a pre\u0300s de deux millions d\u2019anne\u0301es, n\u2019ont laisse\u0301 derrie\u0300re eux que de minuscules frag ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/bebes-anciens-reecrivent-histoire-des-premiers-humains\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B\u00e9b\u00e9s Anciens R\u00e9\u00e9crivent Histoire des Premiers Humains\" \/>\n<meta property=\"og:description\" content=\"Ces trois nourrissons, morts il y a pre\u0300s de deux millions d\u2019anne\u0301es, n\u2019ont laisse\u0301 derrie\u0300re eux que de minuscules frag ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/bebes-anciens-reecrivent-histoire-des-premiers-humains\" \/>\n<meta property=\"og:site_name\" content=\"Senegal\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-06T12:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-07T00:19:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/06\/sm_1749284111.938576.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"899\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/bebes-anciens-reecrivent-histoire-des-premiers-humains#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/bebes-anciens-reecrivent-histoire-des-premiers-humains\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"B\u00e9b\u00e9s Anciens R\u00e9\u00e9crivent Histoire des Premiers Humains\",\"datePublished\":\"2025-06-06T12:00:00+00:00\",\"dateModified\":\"2025-06-07T00:19:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/bebes-anciens-reecrivent-histoire-des-premiers-humains\"},\"wordCount\":532,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/bebes-anciens-reecrivent-histoire-des-premiers-humains#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/06\/sm_1749284111.938576.jpg\",\"keywords\":[\"Senegal\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/bebes-anciens-reecrivent-histoire-des-premiers-humains#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/bebes-anciens-reecrivent-histoire-des-premiers-humains\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/bebes-anciens-reecrivent-histoire-des-premiers-humains\",\"name\":\"B\u00e9b\u00e9s Anciens R\u00e9\u00e9crivent Histoire des Premiers Humains - 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