{"id":472753,"date":"2022-07-10T16:10:02","date_gmt":"2022-07-10T13:10:02","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/new-giant-dinosaur-predator-discovered-with-tiny-arms-like-t-rex\/"},"modified":"2022-07-10T16:10:02","modified_gmt":"2022-07-10T13:10:02","slug":"new-giant-dinosaur-predator-discovered-with-tiny-arms-like-t-rex","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/new-giant-dinosaur-predator-discovered-with-tiny-arms-like-t-rex\/","title":{"rendered":"#New giant dinosaur predator discovered with tiny arms, like T. rex"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a37079c5c5cb\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a37079c5c5cb\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/new-giant-dinosaur-predator-discovered-with-tiny-arms-like-t-rex\/#%E2%80%9CNew_giant_dinosaur_predator_discovered_with_tiny_arms_like_T_rex%E2%80%9D\" >&#8220;New giant dinosaur predator discovered with tiny arms, like T. rex&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CNew_giant_dinosaur_predator_discovered_with_tiny_arms_like_T_rex%E2%80%9D\"><\/span>&#8220;New giant dinosaur predator discovered with tiny arms, like T. rex&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/meraxes----named-after.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/meraxes----named-after.jpg\" data-sub-html=\"Meraxes -- named after a fictional dragon in the Game of Thrones book series -- was dug up over the course of four years during field expeditions in the northern Patagonia region of Argentina, starting with the skull which was found in 2012.\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/meraxes----named-after.jpg\" alt=\"Meraxes -- named after a fictional dragon in the Game of Thrones book series -- was dug up over the course of four years during \" title=\"Meraxes -- named after a fictional dragon in the Game of Thrones book series -- was dug up over the course of four years during field expeditions in the northern Patagonia region of Argentina, starting with the skull which was found in 2012.\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Meraxes &#8212; named after a fictional dragon in the <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/game\/\" data-internallinksmanager029f6b8e52c=\"7\" title=\"Game\" target=\"_blank\" rel=\"noopener\">Game<\/a> of Thrones book <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/watch-movies-tv-seriess\/\" data-internallinksmanager029f6b8e52c=\"8\" title=\"Watch Movies &amp; TV Series\" target=\"_blank\" rel=\"noopener\">series<\/a> &#8212; was dug up over the course of four years during field expeditions in the northern Patagonia region of Argentina, starting with the skull which was found in 2012.<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>Paleontologists said Thursday they had discovered a new giant carnivorous dinosaur species that had a massive head and tiny arms, just like Tyrannosaurus rex.<\/p>\n<section class=\"article-banner first-banner ads-336x280\">\n         <!-- \/4988204\/Phys_Story_InText_Box --><\/p>\n<\/section>\n<p>The researchers&#8217; findings, published in the journal <i>Current Biology<\/i>, suggest that small forelimbs were no evolutionary accident, but rather gave apex predators of the time certain survival advantages.<\/p>\n<p>Meraxes gigas\u2014named after a fictional dragon in the Game of Thrones book series\u2014was dug up over the course of four years during field expeditions in the northern Patagonia region of Argentina, starting with the skull which was found in 2012.<\/p>\n<p>&#8220;We won the lottery and found it literally on the first morning,&#8221; senior author Peter Makovicky from the University of Minnesota told AFP.<\/p>\n<p>The fossilized remains were remarkably well preserved. The skull is just over four feet long (127 centimeters), while the entire animal would have been some 36 feet long, and weighed four metric tons.<\/p>\n<p>Its arms were two feet long, &#8220;so it&#8217;s literally half the length of the skull and the animal would not have been able to reach its mouth,&#8221; said Makovicky.<\/p>\n<p>T. rex didn&#8217;t get its tiny arms from M. gigas. The latter went extinct 20 million years before the former arose, and the two species were far apart on the evolutionary tree. <\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/this-image-shows-the-t.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/this-image-shows-the-t.jpg\" data-sub-html=\"This image shows the transportion a plaster jacket a new dinosaur Meraxes gigas, in Las Campanas Canyon, 25kms southwest of Villa El Chocon, Neuquen Province, Argentina, on March 17, 2014.\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/this-image-shows-the-t.jpg\" alt=\"This image shows the transportion a plaster jacket a new dinosaur Meraxes gigas, in Las Campanas Canyon, 25kms southwest of Vill\" title=\"This image shows the transportion a plaster jacket a new dinosaur Meraxes gigas, in Las Campanas Canyon, 25kms southwest of Villa El Chocon, Neuquen Province, Argentina, on March 17, 2014.\"\/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">\n                This image shows the transportion a plaster jacket a new dinosaur Meraxes gigas, in Las Campanas Canyon, 25kms southwest of Villa El Chocon, Neuquen Province, Argentina, on March 17, 2014.<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>Instead, the authors believe the fact that tyrannosaurids, carcharodontosaurids\u2014the group Meraxes belonged to\u2014and a third giant predator species called abelisaurids all evolved tiny arms points to certain benefits.<\/p>\n<p>Makovicky believes that as their heads grew larger, it became the dominant tool of their predatory arsenal, taking on the function that forelimbs would have had in smaller species. <\/p>\n<p>His co-author Juan Canale, the project lead  at Ernesto Bachmann Paleontological Museum in Neuquen, Argentina, went further in suggesting other advantages.<\/p>\n<p><b>Mating and movement support<\/b><\/p>\n<p>&#8220;I&#8217;m convinced that those proportionally tiny arms had some sort of function. The skeleton shows large muscle insertions and fully developed pectoral girdles, so the arm had strong muscles,&#8221; he said in a statement.<\/p>\n<p>&#8220;They may have used the arms for reproductive behavior such as holding the female during mating or support themselves to stand back up after a break or a fall.&#8221;<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/this-image-shows-the-e.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/this-image-shows-the-e.jpg\" data-sub-html=\"This image shows the excavation site a new dinosaur, Meraxes gigas, in Las Campanas Canyon, 25kms southwest of Villa El Chocon, Neuquen Province, Argentina, on March 15, 2014.\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/this-image-shows-the-e.jpg\" alt=\"This image shows the excavation site a new dinosaur, Meraxes gigas, in Las Campanas Canyon, 25kms southwest of Villa El Chocon, \" title=\"This image shows the excavation site a new dinosaur, Meraxes gigas, in Las Campanas Canyon, 25kms southwest of Villa El Chocon, Neuquen Province, Argentina, on March 15, 2014.\"\/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">\n                This image shows the excavation site a new dinosaur, Meraxes gigas, in Las Campanas Canyon, 25kms southwest of Villa El Chocon, Neuquen Province, Argentina, on March 15, 2014.<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>Meraxes roamed the Earth between 90 to 100 million years ago during the Cretaceous, at a time when the region was wetter, more forested, and much closer to the sea, said Makovicky.<\/p>\n<p>They would have preyed on a menagerie of contemporary sauropods\u2014some of whom were discovered at the same site.<\/p>\n<p>The individual lived to around 40 years\u2014a ripe old age for dinosaurs\u2014and its skull was replete with crests, furrows, bumps and small hornlets.<\/p>\n<p>&#8220;It certainly would have looked very imposing and gargoyle like,&#8221; said Makovicky.<\/p>\n<p>&#8220;Those are the kinds of features that in living animals are often under sexual selection,&#8221; speculating the species used their massive skulls as &#8220;billboards&#8221; for advertising to would-be mates.<\/p>\n<hr\/>\n<div class=\"article-main__explore my-4 d-print-none\">\n<p>                                            New giant carnivorous dinosaur discovered with tiny arms like T. rex\n                                        <\/p><\/div>\n<hr class=\"mb-4\"\/>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Juan I. Canale, New giant carnivorous dinosaur reveals convergent evolutionary trends in theropod arm reduction, <i>Current Biology<\/i> (2022).  <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1016\/j.cub.2022.05.057\">DOI: 10.1016\/j.cub.2022.05.057<\/a>. <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.cell.com\/current-biology\/fulltext\/S0960-9822(22)00860-0\">www.cell.com\/current-biology\/f \u2026 0960-9822(22)00860-0<\/a><\/p><\/div>\n<p class=\"article-main__note mt-4\">\n                                                \u00a9 2022 AFP<\/p>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                 <strong>Citation<\/strong>:<br \/>\n                                                 New giant dinosaur predator discovered with tiny arms, like T. rex (2022, July 10)<br \/>\n                                                 retrieved 11 July 2022<br \/>\n                                                 from https:\/\/phys.org\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2022-07-giant-dinosaur-predator-tiny-arms.html<\/p>\n<p>                                            This document is subject to copyright. 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Paleontologists&#8230;<\/p>\n","protected":false},"author":1,"featured_media":472754,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/meraxes----named-after.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-472753","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/472753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=472753"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/472753\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/472754"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=472753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=472753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=472753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}