{"id":17283,"date":"2023-09-02T13:10:55","date_gmt":"2023-09-02T13:10:55","guid":{"rendered":"https:\/\/www.africa-press.net\/djibouti\/politique\/des-cousins-du-t-rex-decouverts-au-maroc"},"modified":"2023-09-02T13:22:22","modified_gmt":"2023-09-02T13:22:22","slug":"des-cousins-du-t-rex-decouverts-au-maroc","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/djibouti\/toutes-les-actualites\/des-cousins-du-t-rex-decouverts-au-maroc","title":{"rendered":"Des cousins du T. rex d\u00e9couverts au Maroc"},"content":{"rendered":"

Africa-Press – Djibouti. <\/strong><\/span>Deux nouveaux squelettes de dinosaures, tre\u0300s partiels, ont e\u0301te\u0301 de\u0301couverts dans le bassin d’Ouled Abdoum, au Maroc, ou\u0300 se dressent des carrie\u0300res de phosphates. Curieusement, ce site e\u0301tait a\u0300 la fin du Cre\u0301tace\u0301 (il y a 70 millions d’anne\u0301es environ) une mer tropicale peu profonde et la majorite\u0301 des fossiles qui ont e\u0301te\u0301 retrouve\u0301s correspondent a\u0300 des restes de cre\u0301atures marines : poissons, crocodiliens, tortues et des reptiles marins comme des e\u0301lasmosaures ou des mosasaures et des requins. Pourtant, on y a aussi extirpe\u0301 des ossements d’animaux terrestres (sans doute charrie\u0301s la\u0300 par une rivie\u0300re) dont des ance\u0302tres des e\u0301le\u0301phants et avec eux quelques rares dinosaures.<\/p>\n

Deux animaux proches du T. rex<\/b><\/p>\n

Jusqu’a\u0300 pre\u0301sent, dans ce bassin qui correspond a\u0300 plusieurs sites de fouilles, ont e\u0301te\u0301 de\u0301couverts trois espe\u0300ces de dinosaures : un hadrosaure (ou dinosaure a\u0300 bec de canard) nomme\u0301 Ajnabia odysseus, un titanosaure au long cou et un Abe\u0301lisauride\u0301 Chenanisaurus barbaricus d’une taille imposante de pre\u0300s de 9 me\u0300tres de longueur. Les deux nouvelles espe\u0300ces appartiennent aussi a\u0300 la famille des Abe\u0301lisauride\u0301s qui sont des dinosaures carnivores bipe\u0300des avec une allure les rapprochant fortement des T. rex : leur museau est toutefois plus court et leurs bras encore plus petits.<\/p>\n

Le premier fossile a e\u0301te\u0301 de\u0301couvert pre\u0300s de la ville de Sidi Daoui : il s’agit d’un os du pied correspondant a\u0300 un dinosaure adulte de 2,5 me\u0300tres de long environ. Le deuxie\u0300me est un tibia, d’un individu adulte aussi mais plus gros de pre\u0300s de 5 me\u0300tres de long, qui a e\u0301te\u0301 extirpe\u0301 pre\u0300s de la ville de Sidi Chennane. La description des deux os, publie\u0301e dans la revue Cretaceous Research, indique qu’il s’agit la\u0300 de deux espe\u0300ces diffe\u0301rentes et encore jamais de\u0301crites. Le manque d’ossements ne permet toutefois pas de les nommer.<\/p>\n

Grande diversite\u0301 pour les dinosaures marocains<\/b><\/p>\n

En plus de ces deux-la\u0300, d’autres fossiles de\u0301couverts au me\u0302me endroit sont en train d’e\u0302tre examine\u0301s. Les re\u0301sultats des analyses ne sont pas encore publie\u0301s mais elles sugge\u0300rent que plusieurs nouvelles espe\u0300ces pourraient encore e\u0302tre identifie\u0301es. Pas tre\u0300s loin d’Ouled Abdoum, un peu plus au sud, les Lits de Kem Kem ont e\u0301galement re\u0301ve\u0301le\u0301 un grand nombre de dinosaures un peu plus anciens (autour de 100 millions d’anne\u0301es) dont la pre\u0301sence atteste de la vivacite\u0301 de ce groupe avant l’extinction de la fin du Cre\u0301tace\u0301.<\/p>\n

Une the\u0301orie expliquait leur disparition (en plus de l’e\u0301ve\u0300nement de\u0301clencheur que fut l’aste\u0301roi\u0308de ge\u0301ant qui s’est e\u0301crase\u0301 dans le Yucatan) par une baisse de leur diversite\u0301. Mais cette pre\u0301sume\u0301e rare\u0301faction des espe\u0300ces n’est observe\u0301e qu’en Ame\u0301rique du Nord et ne refle\u0300te pas la fac\u0327on dont ils vivaient dans d’autres zones du globe.<\/p>\n

Pour plus d’informations et d’analyses sur la Djibouti<\/a>, suivez Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Djibouti. Deux nouveaux squelettes de dinosaures, tre\u0300s partiels, ont e\u0301te\u0301 de\u0301couverts dans le bassin d’Ouled Abdoum, au Maroc, ou\u0300 se dressent des carrie\u0300res de phosphates. Curieusement, ce site e\u0301tait a\u0300 la fin du Cre\u0301tace\u0301 (il y a 70 millions d’anne\u0301es environ) une mer tropicale peu profonde et la majorite\u0301 des fossiles qui ont […]<\/p>\n","protected":false},"author":82,"featured_media":17282,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[36,49,50],"class_list":["post-17283","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-djibouti","tag-djibouti"],"yoast_head":"\nDes cousins du T. rex d\u00e9couverts au Maroc - Djibouti<\/title>\n<meta name=\"description\" content=\"Deux nouveaux squelettes de dinosaures, tre\u0300s partiels, ont e\u0301te\u0301 de\u0301couverts dans le bassin d'Ouled Abdoum, au Maroc, o ...\" \/>\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\/djibouti\/toutes-les-actualites\/des-cousins-du-t-rex-decouverts-au-maroc\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des cousins du T. rex d\u00e9couverts au Maroc\" \/>\n<meta property=\"og:description\" content=\"Deux nouveaux squelettes de dinosaures, tre\u0300s partiels, ont e\u0301te\u0301 de\u0301couverts dans le bassin d'Ouled Abdoum, au Maroc, o ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/djibouti\/toutes-les-actualites\/des-cousins-du-t-rex-decouverts-au-maroc\" \/>\n<meta property=\"og:site_name\" content=\"Djibouti\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-02T13:10:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-02T13:22:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/djibouti\/sites\/52\/2023\/09\/sm_1693648154.437032.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\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\/djibouti\/toutes-les-actualites\/des-cousins-du-t-rex-decouverts-au-maroc#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/djibouti\/toutes-les-actualites\/des-cousins-du-t-rex-decouverts-au-maroc\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/djibouti\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Des cousins du T. rex d\u00e9couverts au Maroc\",\"datePublished\":\"2023-09-02T13:10:55+00:00\",\"dateModified\":\"2023-09-02T13:22:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/djibouti\/toutes-les-actualites\/des-cousins-du-t-rex-decouverts-au-maroc\"},\"wordCount\":549,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/djibouti\/toutes-les-actualites\/des-cousins-du-t-rex-decouverts-au-maroc#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/djibouti\/sites\/52\/2023\/09\/sm_1693648154.437032.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Djibouti\",\"Djibouti\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/djibouti\/toutes-les-actualites\/des-cousins-du-t-rex-decouverts-au-maroc#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/djibouti\/toutes-les-actualites\/des-cousins-du-t-rex-decouverts-au-maroc\",\"url\":\"https:\/\/www.africa-press.net\/djibouti\/toutes-les-actualites\/des-cousins-du-t-rex-decouverts-au-maroc\",\"name\":\"Des cousins du T. rex d\u00e9couverts au Maroc - 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