function setCorrectSizes(div_of_ad, sizes) { var div_width = div_of_ad.offsetWidth; var new_sizes = new Array(); for (var i = 0; i < sizes.length; i++) { var ad_width = sizes[i][0]; if(div_width >= ad_width) { new_sizes.push(sizes[i]); } } return new_sizes; } function setStoryCommentsAd(ad, position) { var comments_id = document.getElementById("comments-top"); var ad_maincontainer = document.createElement("DIV"); ad_maincontainer.setAttribute("style", "margin:25px auto 25px auto; text-align:center;"); var ad_container = document.createElement("DIV"); ad_container.setAttribute("id", ad["div_gpt"]); var ad_comment = document.createComment(" /10377667/" + ad["zone"] + " "); ad_maincontainer.appendChild(ad_comment); ad_maincontainer.appendChild(ad_container); comments_id.insertBefore(ad_maincontainer, comments_id.childNodes[position]); var sizes = (is_mobile == 1) ? ad["sizes_mobile"] : ad["sizes_desktop"]; googleDefineSlot(ad, sizes); googletag.cmd.push(function() { googletag.display(ad["div_gpt"]); }); } function setAdDynamicPosition(ad, element, position) { var ad_maincontainer = document.createElement("DIV"); ad_maincontainer.setAttribute("style", "margin:25px auto 25px auto; text-align:center;"); var ad_container = document.createElement("DIV"); ad_container.setAttribute("id", ad["div_gpt"]); var ad_comment = document.createComment(" /10377667/" + ad["zone"] + " "); ad_maincontainer.appendChild(ad_comment); ad_maincontainer.appendChild(ad_container); element.insertBefore(ad_maincontainer, element.childNodes[position]); var sizes = (is_mobile == 1) ? ad["sizes_mobile"] : ad["sizes_desktop"]; googleDefineSlot(ad, sizes); googletag.cmd.push(function() { googletag.display(ad["div_gpt"]); }); } function setStoryCommentsFuse(position, fuseId) { var comments_id = document.getElementById("comments-top"); var wrapper = document.createElement("DIV"); if (is_mobile == 1) { wrapper.className = "ads-interlinks-mobile ad-roba-container ad-roba-mobile-container"; } else { wrapper.className = "ads-interlinks"; } var fuse = document.createElement("DIV"); fuse.setAttribute("data-fuse", fuseId); wrapper.appendChild(fuse); comments_id.insertBefore(wrapper, comments_id.childNodes[position]); } function displayStoryCommentsAdGoogle() { var main_comments = document.getElementsByClassName("threader zero"); var comments = document.getElementsByClassName("threader"); if(document.getElementById("unauthenticated-related-links")) { var comment_form = document.querySelector('.commentform:not(.comment_unfold_action)'); var comment_form_unfold = document.querySelector('.comment_unfold_action'); comment_form_unfold.insertAdjacentElement('afterend', comment_form); comment_form.classList.add("white"); if (is_mobile == 0) { if(comments.length > 4) { setStoryCommentsAd(MEGA_2, 7); } } else { let calc_child = document.getElementById("newswrap").childNodes.length; setAdDynamicPosition(MEGA_2, document.querySelector("#newswrap"), calc_child.length - 1 ); if(comments.length > 4) { setStoryCommentsAd(MEGA_1, 7); } if(comments.length > 14){ setStoryCommentsAd(MEGA_3, 17); } } return; } if (is_mobile == 0) { if(comments.length > 2) { setStoryCommentsFuse(3, "incontent_1"); } if(comments.length > 4) { setStoryCommentsFuse(6, "incontent_2"); } if(comments.length > 4) { setStoryCommentsAd(MEGA_2, 7); } if(comments.length > 8) { setStoryCommentsFuse(9, "incontent_3"); } if(comments.length > 10) { setStoryCommentsFuse(11, "incontent_4"); } } else { if(comments.length > 3) { setStoryCommentsFuse(4, "incontent_1"); } if(comments.length > 7) { setStoryCommentsFuse(8, "incontent_2"); } if(comments.length > 11) { setStoryCommentsFuse(12, "incontent_3"); } if(comments.length > 14){ setStoryCommentsAd(MEGA_3, 17); } } } googletag.cmd.push(function () { setAdGoogle(ROBA_0); setAdGoogle(ROBA_1); setAdGoogle(ROBA_2); setDynamicRoba3(ROBA_3); setDynamicRoba4(ROBA_4); setAdGoogle(MEGA_1); setAdGoogle(MEGA_2); setAdGoogle(MEGA_3); setAdGoogle(MEGA_4); if(document.getElementById("unauthenticated-related-links")) googletag.pubads().setTargeting('related', 'related_news_story_v2'); googletag.pubads().enableSingleRequest(); googletag.pubads().disableInitialLoad(); });
Comenzó a aparecer hace unos 458 millones de años, cambiando para siempre la vida en el planeta Hace años, el geólogo Neil Davies viajó a Bolivia para buscar entre montones de peces fosilizados. Quería saber más sobre la antigua costa por la que nadaron estos peces hace aproximadamente 460 millones de años, y tal vez aprender cómo murieron. Descubrió que los peces parecían haber sido asfixiados por la arena fangosa que los ríos arrastraban rápidamente al mar, tal vez durante una tormenta. Montones similares de peces asfixiados aparecen en otra
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etiquetas: origen , barro , neil davies , peces fosilizados , arena fangosa , ríos
