{"id":122729,"date":"2024-11-06T13:50:47","date_gmt":"2024-11-06T06:50:47","guid":{"rendered":"https:\/\/hotvideos24.online\/?p=122729"},"modified":"2024-11-06T13:50:47","modified_gmt":"2024-11-06T06:50:47","slug":"researchers-discover-worlds-oldest-tadpole","status":"publish","type":"post","link":"https:\/\/hotvideos24.online\/?p=122729","title":{"rendered":"Researchers Discover World\u2019s Oldest Tadpole"},"content":{"rendered":"<p> <script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3711241968723425\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-layout-key=\"-fb+5w+4e-db+86\"\r\n     data-ad-client=\"ca-pub-3711241968723425\"\r\n     data-ad-slot=\"7910942971\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><br \/>\n<\/p>\n<div id=\"article-content\">\n<div class=\"wsw\">\n<p>Scientists in Argentina have discovered the oldest-known remains of the tadpole. The animal belonged to a large frog <strong>species<\/strong> that lived alongside dinosaurs about 161 million years ago.<\/p>\n<p>The researchers said the 16-centimeter-long tadpole died during the larval period, or stage, of frog development. The discovery is providing new information about the development of frogs and toads.<\/p>\n<p>The remains suggest tadpoles today are largely unchanged from their ancestors in the ancient time called the Jurassic period. The oldest-known frog remains date back even further, though no older tadpole <strong>fossils<\/strong> have been found.<\/p>\n<div class=\"wsw__embed\">\n<figure class=\"media-image js-media-expand\">\n<div class=\"img-wrap\">\n<div class=\"thumb\">\n<img decoding=\"async\" alt=\"This image provided by Mariana Chuliver shows paleontologist Mat\u00edas Motta at the fossil site &quot;Estancia La Matilde&quot; in Patagonia, Argentina showing an adult specimen of the fossil frog Notobatrachus degiustoi. (Mariana Chuliver via AP)\" src=\"https:\/\/gdb.voanews.com\/ad861f9a-47ff-4e48-90ba-5894499d86a3_w250_r0_s.jpg\"\/>\n<\/div>\n<p><span class=\"ico ico-fullscreen ico--media-expand ico--rounded\"\/>\n<\/div><figcaption>\n<span class=\"caption\">This image provided by Mariana Chuliver shows paleontologist Mat\u00edas Motta at the fossil site &#8220;Estancia La Matilde&#8221; in Patagonia, Argentina showing an adult specimen of the fossil frog Notobatrachus degiustoi. (Mariana Chuliver via AP)<\/span><br \/>\n<\/figcaption><\/figure>\n<\/div>\n<p>The remains are in good condition. In fact, researchers say, the ancient tadpole has some soft tissues rarely seen in fossils. The tadpole&#8217;s eyes and nerves, for example, appear as dark markings in the fossil.<\/p>\n<p>Fossil hunters found the tadpole in 2020, during a dig for dinosaur remains on a ranch in the southern province of Santa Cruz. The fossil includes the tadpole&#8217;s head and most of its body.<\/p>\n<p>Frogs have a two-stage life cycle, with the tadpole larva developing into the adult form. This tadpole was in the late stages of development. Adults of this species are a similar length as the tadpole, the researchers said.<\/p>\n<p>&#8220;It&#8217;s not only the oldest tadpole in the world and amazingly <strong>preserved<\/strong>, but it also tells us about the size of one of the few frog species known from that time,&#8221; said biologist Mariana Chuliver of Fundaci\u00f3n Azara-Universidad Maim\u00f3nides.<\/p>\n<p>Chuliver was the lead writer of the study that appeared recently in the scientific publication <em>Nature<\/em>.<\/p>\n<p>Chuliver said the soft tissue remains are important because they permit researchers to &#8220;know the diet and lifestyle of these organisms.&#8221;<\/p>\n<p>The remains, Chuliver added, show that the form and structure of tadpoles have &#8220;remained almost unchanged over the last 160 million years.&#8221;<\/p>\n<p>I\u2019m John Russell.<\/p>\n<p><em>Miguel Lo Bianco reported on this story for Reuters. John Russell adapted it for VOA Learning English. <\/em><\/p>\n<p>_______________________________________________<\/p>\n<h2 class=\"wsw__h2\">Words in This Story<\/h2>\n<p><strong>species <\/strong><em>\u2013 n.<\/em> a class of animals having common attributes and designated by a common name<\/p>\n<p><strong>fossil <\/strong><em>\u2013 n.<\/em> the remains of an organism of past geologic ages that has been preserved in the earth&#8217;s crust<\/p>\n<p><strong>preserve<\/strong> <em>\u2013 v.<\/em> to keep intact or free from decay<\/p>\n<\/div>\n<\/div>\n<p><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3711241968723425\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-layout-key=\"-fb+5w+4e-db+86\"\r\n     data-ad-client=\"ca-pub-3711241968723425\"\r\n     data-ad-slot=\"7910942971\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><br \/>\n<br \/><div data-type=\"_mgwidget\" data-widget-id=\"1660802\">\r\n<\/div>\r\n<script>(function(w,q){w[q]=w[q]||[];w[q].push([\"_mgc.load\"])})(window,\"_mgq\");\r\n<\/script>\r\n<br \/>\n<br \/><a href=\"https:\/\/learningenglish.voanews.com\/a\/researchers-discover-world-s-oldest-tadpole-\/7851082.html\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Scientists in Argentina have discovered the oldest-known remains of the tadpole. The animal belonged to a large frog species that lived alongside dinosaurs about 161 million years ago. The researchers &hellip; <a href=\"https:\/\/hotvideos24.online\/?p=122729\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8628],"tags":[],"class_list":["post-122729","post","type-post","status-publish","format-standard","hentry","category-science","entry"],"_links":{"self":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/122729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=122729"}],"version-history":[{"count":0,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=\/wp\/v2\/posts\/122729\/revisions"}],"wp:attachment":[{"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=122729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=122729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hotvideos24.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=122729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}