{"id":4075,"date":"2026-02-01T22:50:55","date_gmt":"2026-02-01T22:50:55","guid":{"rendered":"https:\/\/www.africa-press.net\/fr\/home\/decouverte-de-traces-de-dinosaures-en-afrique-du-sud"},"modified":"2026-02-02T04:15:05","modified_gmt":"2026-02-02T04:15:05","slug":"decouverte-de-traces-de-dinosaures-en-afrique-du-sud","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/fr\/divers\/decouverte-de-traces-de-dinosaures-en-afrique-du-sud","title":{"rendered":"D\u00e9couverte de Traces de Dinosaures en Afrique du Sud"},"content":{"rendered":"

Africa-Press. <\/strong> <\/span>Une e\u0301quipe de scientifiques a mis au jour un nouveau site de traces de pas de dinosaures sur la co\u0302te sud-ouest de l\u2019Afrique du Sud. Cette de\u0301couverte est conside\u0301re\u0301e comme contenant les plus petites empreintes de dinosaures jamais documente\u0301es dans le sud du continent, et elle rede\u0301finit la compre\u0301hension de la pe\u0301riode durant laquelle ces cre\u0301atures anciennes ont occupe\u0301 la re\u0301gion.<\/p>\n

Une e\u0301tude, publie\u0301e dans la revue South African Journal of Science, documente la pre\u0301sence de ces traces dans la formation ge\u0301ologique de Brenton (Brenton Formation), rattache\u0301e au groupe d\u2019Uitenhage (Uitenhage Group), a\u0300 proximite\u0301 de la ville de Knysna, dans la province du Cap-Occidental.<\/p>\n

Les chercheurs estiment l\u2019a\u0302ge de ces empreintes a\u0300 environ 132 millions d\u2019anne\u0301es, correspondant au Cre\u0301tace\u0301 infe\u0301rieur. Cela les rend plus re\u0301centes d\u2019environ 50 millions d\u2019anne\u0301es que les plus jeunes traces de dinosaures pre\u0301ce\u0301demment connues dans le bassin semi-aride inte\u0301rieur du Karoo, au centre du pays.<\/p>\n

L\u2019e\u0301quipe, compose\u0301e de spe\u0301cialistes des traces fossiles (ichnologues) du Centre africain de pale\u0301oscience co\u0302tie\u0300re de l\u2019Universite\u0301 Nelson Mandela, a identifie\u0301 plus de vingt empreintes potentielles sur une petite surface rocheuse d\u2019environ 40 me\u0300tres de long et 5 me\u0300tres de large. Certaines de ces traces se trouvent dans des zones submerge\u0301es lors des mare\u0301es hautes, tandis que d\u2019autres sont visibles sur des affleurements rocheux expose\u0301s le long du littoral.<\/p>\n

Deuxie\u0300me enregistrement de traces du Cre\u0301tace\u0301<\/b><\/p>\n

L\u2019e\u0301tude indique que ces empreintes appartiennent a\u0300 des dinosaures carnivores de type the\u0301ropodes, ainsi qu\u2019a\u0300 des dinosaures herbivores probablement rattache\u0301s aux ornithopodes, et possiblement aux sauropodes. Cela te\u0301moigne d\u2019une diversite\u0301 d\u2019espe\u0300ces qui parcouraient ces co\u0302tes durant le Cre\u0301tace\u0301 infe\u0301rieur.<\/p>\n

Il apparai\u0302t e\u0301galement que ce site constitue le deuxie\u0300me enregistrement de traces de dinosaures de cette pe\u0301riode dans la province du Cap-Occidental, apre\u0300s une de\u0301couverte ante\u0301rieure signale\u0301e dans la formation de Robberg (Robberg Formation), dont l\u2019a\u0302ge est estime\u0301 a\u0300 environ 140 millions d\u2019anne\u0301es.<\/p>\n

Les chercheurs estiment que cette de\u0301couverte e\u0301largit la chronologie connue de la pre\u0301sence des dinosaures en Afrique du Sud. Elle sugge\u0300re que ces animaux ont occupe\u0301 la re\u0301gion du Cap-Occidental plus longtemps qu\u2019on ne le pensait, dans des environnements co\u0302tiers dynamiques influence\u0301s par les mare\u0301es et l\u2019e\u0301rosion marine.<\/p>\n

Ils soulignent e\u0301galement que la richesse du registre fossile dans les formations du Cre\u0301tace\u0301 de la re\u0301gion encourage la poursuite de nouvelles campagnes de prospection sur le terrain, a\u0300 la recherche d\u2019autres sites de traces de pas, voire de restes osseux, susceptibles de fournir une image plus comple\u0300te de la vie des dinosaures a\u0300 l\u2019extre\u0302me sud du continent africain.<\/p>\n

Retrouvez plus d\u2019actualit\u00e9s et d\u2019analyses sur l\u2019Afrique<\/span> sur le site Africa Press<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press. Une e\u0301quipe de scientifiques a mis au jour un nouveau site de traces de pas de dinosaures sur la co\u0302te sud-ouest de l\u2019Afrique du Sud. Cette de\u0301couverte est conside\u0301re\u0301e comme contenant les plus petites empreintes de dinosaures jamais documente\u0301es dans le sud du continent, et elle rede\u0301finit la compre\u0301hension de la pe\u0301riode durant laquelle […]<\/p>\n","protected":false},"author":82,"featured_media":4074,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[240],"class_list":["post-4075","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","tag-lafrique"],"yoast_head":"\nD\u00e9couverte de Traces de Dinosaures en Afrique du Sud - Africa Press France<\/title>\n<meta name=\"description\" content=\"-article-header-tag"> Africa-Press. 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