{"id":578640,"date":"2025-12-05T00:00:25","date_gmt":"2025-12-05T00:00:25","guid":{"rendered":"https:\/\/www.europesays.com\/fr\/578640\/"},"modified":"2025-12-05T00:00:25","modified_gmt":"2025-12-05T00:00:25","slug":"ses-ados-etaient-en-fait-des-adultes-dune-autre-espece","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/fr\/578640\/","title":{"rendered":"ses ados \u00e9taient en fait des adultes d\u2019une autre esp\u00e8ce"},"content":{"rendered":"<p>                     <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.europesays.com\/fr\/wp-content\/uploads\/2025\/12\/501121c_upload-1-s7s5e39fcs7c-nanotyrannus-dsc-8611.jpeg\" alt=\"Le petit cr\u00e2ne, nomm\u00e9 CMNH 7541,\u00a0d\u00e9couvert dans la formation Hell Creek, dans le Montana.\"   width=\"664\" height=\"443\"\/>    Le petit cr\u00e2ne, nomm\u00e9 CMNH 7541,\u00a0d\u00e9couvert dans la formation Hell Creek, dans le Montana.  AMY MARTINY\/LAWRENCE M. WITMER, PHD\/OHIO UNIVERSITY                 <\/p>\n<p class=\"article__paragraph  \">L\u2019un des d\u00e9bats les plus anim\u00e9s sur Tyrannosaurus rex, entam\u00e9 il y a plusieurs d\u00e9cennies, approche-t-il de son \u00e9pilogue\u00a0? Coup sur coup, deux articles publi\u00e9s dans des revues scientifiques de haut rang viennent contredire l\u2019hypoth\u00e8se selon laquelle certains petits tyrannosaurid\u00e9s seraient des \u00ab\u00a0ados\u00a0\u00bb de l\u2019embl\u00e9matique T. rex. \u00ab\u00a0C\u2019est une histoire \u00e0 rebondissements, commente le pal\u00e9ontologue Ronan Allain (Mus\u00e9um national d\u2019histoire naturelle). Personnellement, j\u2019\u00e9tais acquis \u00e0 l\u2019id\u00e9e que les fossiles en question \u00e9taient des juv\u00e9niles de T. rex. Mais je suis d\u00e9sormais plut\u00f4t convaincu par ces nouveaux travaux qui r\u00e9futent, sans recourir \u00e0 l\u2019argument d\u2019autorit\u00e9, cette hypoth\u00e8se.\u00a0\u00bb<\/p>\n<p class=\"article__paragraph  \">Pour le chercheur fran\u00e7ais, l\u2019enjeu est purement intellectuel, et non pas r\u00e9putationnel, comme il peut l\u2019\u00eatre pour certains pal\u00e9ontologues am\u00e9ricains\u00a0: ces derniers ont, pour certains, b\u00e2ti une part de leur carri\u00e8re sur cette question.<\/p>\n<p class=\"article__paragraph  \">L\u2019histoire d\u00e9bute en\u00a01942, avec la d\u00e9couverte dans la formation Hell Creek, dans le Montana, d\u2019un petit cr\u00e2ne tr\u00e8s complet de tyrannosaurid\u00e9, vieux d\u2019environ 66\u00a0millions d\u2019ann\u00e9es \u2013 juste avant la disparition des dinosaures non aviens. Enregistr\u00e9 sous le matricule CMNH 7541, il est d\u2019abord rattach\u00e9 \u00e0 Gorgosaurus, un genre de tyrannosaure. En\u00a01988, Robert Bakker (universit\u00e9 du Colorado, Boulder), consid\u00e9rant qu\u2019il s\u2019agit d\u2019un cr\u00e2ne adulte, propose de faire de CMNH 7541, conserv\u00e9 au Mus\u00e9um de Cleveland (Ohio), le repr\u00e9sentant d\u2019un nouveau genre, Nanotyrannus, qu\u2019il qualifie de \u00ab\u00a0tyrannosaure pygm\u00e9e\u00a0\u00bb.<\/p>\n<p class=\"reading-mode-only \"><strong>Il vous reste 78.89% de cet article \u00e0 lire. La suite est r\u00e9serv\u00e9e aux abonn\u00e9s.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"Le petit cr\u00e2ne, nomm\u00e9 CMNH 7541,\u00a0d\u00e9couvert dans la formation Hell Creek, dans le Montana. AMY MARTINY\/LAWRENCE M. WITMER,&hellip;\n","protected":false},"author":2,"featured_media":578641,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[1011,27,43,40,41,39,42,44],"class_list":{"0":"post-578640","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-sciences-et-technologies","8":"tag-fr","9":"tag-france","10":"tag-science","11":"tag-science-and-technology","12":"tag-sciences","13":"tag-sciences-et-technologies","14":"tag-technologies","15":"tag-technology"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@fr\/115664023327187328","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts\/578640","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/comments?post=578640"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/posts\/578640\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/media\/578641"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/media?parent=578640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/categories?post=578640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/fr\/wp-json\/wp\/v2\/tags?post=578640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}