Les restes de femta i vòmit que demostren com els dinosaures van dominar la Terra

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href="/fonts/ChronicleDeckCond-Semibold.h-0ddfd0d00660dc787823665f180c8697.woff2" as="font" type="font/woff2" crossorigin> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"NewsArticle","headline":"Les restes de femta i vòmit que demostren com els dinosaures van dominar la Terra","url":"http:\/\/www.ara.cat\/ciencia-medi-ambient\/restes-femta-vomit-demostren-dinosaures-dominar-terra_1_5213871.html","image":[{"@type":"ImageObject","url":"https:\/\/static1.ara.cat\/clip\/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_default_0.jpg","name":"Reconstrucció artística de dinosaures sauropodomorfs herbívors que menjaven falgueres a l'ecosistema del juràssic primerenc de Soltykow.","author":{"@type":"Person","name":"Marcin Ambrozik \/ Nature"}},{"@type":"ImageObject","url":"https:\/\/static1.ara.cat\/clip\/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_default_1045588.jpg","name":"Resta fòssil de la femta d'un dinosaure.","author":{"@type":"Person","name":"Grzegorz Niedzwiedzki"}}],"author":{"@type":"Person","name":"ARA"},"datePublished":"2024-11-27T16:40:53+00:00","dateModified":"2024-11-27T19:03:17+00:00","publisher":{"@type":"Organization","name":"Ara.cat","url":"https:\/\/www.ara.cat","logo":{"@type":"ImageObject","url":"https:\/\/www.ara.cat\/logos\/ara.svg","name":"Ara.cat"},"sameAs":["https:\/\/www.twitter.com\/diariARA","https:\/\/www.facebook.com\/diariARA","https:\/\/www.instagram.com\/diariara\/","https:\/\/t.me\/diariara","https:\/\/www.youtube.com\/c\/aracat","https:\/\/ca.wikipedia.org\/wiki\/Ara_(diari)","https:\/\/www.linkedin.com\/company\/diari-ara\/"]},"mainEntityOfPage":"http:\/\/www.ara.cat\/ciencia-medi-ambient\/restes-femta-vomit-demostren-dinosaures-dominar-terra_1_5213871.html","isPartOf":{"@type":["CreativeWork","Product"],"name":"ara.cat"},"isAccessibleForFree":false,"articleSection":["Ciència i medi ambient"],"articleBody":"Els dinosaures van dominar la Terra fa 200 milions d'anys, però el camí que van seguir fins a assolir la supremacia en els ecosistemes terrestres era una incògnita. Fins ara. Investigadors de la Universitat d'Uppsala, a Suècia, ho han resolt gràcies a les mostres fòssils de femta i vòmits d'aquests rèptils gegants, mitjançant les quals han aconseguit noves pistes sobre la seva alimentació. La investigació, que publica aquest dimecres la revista Nature, revela que l'increment de l'activitat volcànica de l'època va provocar canvis ambientals que van afavorir l'aparició d'una gamma més diversa de plantes per alimentar-se. Això, per un costat, va permetre que hi hagués noves espècies d'herbívors més grossos i, per l'altre, dinosaures carnívors que els caçaven i, per tant, també eren més grossos. Per arribar a aquestes conclusions els autors han analitzat més de 500 restes fossilitzades de material digestiu (com ara excrements i vòmits) del sud-est de Polònia. Aquestes mostres, que s'anomenen copròlits, corresponen als períodes triàsic i juràssic. Si bé els registres fòssils mostren que els dinosaures van evolucionar durant la part mitjana del període triàsic, fa entre 247 i 237 milions d'anys, el seu domini en els ecosistemes no es va veure fins a principis del període juràssic, fa uns 200 milions d'anys. L'equip ha identificat restes d'aliments no digerits, des de plantes fins a altres animals, per reconstruir les interaccions dels dinosaures dins dels ecosistemes i determinar com i quan va començar el seu regnat a la Terra. Grans quantitats de plantes \"Estudiar restes d'aliments no digerits per determinar qui es va menjar a qui en el passat és un veritable treball de detectiu\", argumenta Martin Qvarnström, l'autor principal de l'estudi, en un comunicat de la universitat sueca. L'investigador defensa que examinar què menjaven els animals i com van interactuar amb el seu entorn proporciona una \"informació inestimable sobre com van assolir la supremacia\". Es tracta d'una investigació a partir de restes fòssils recollides durant 25 anys i que han fet conjuntament amb investigadors de Noruega, Polònia i Hongria. Els copròlits analitzats contenien restes de peixos, insectes, animals més grans i plantes, alguns inusualment ben conservats, inclosos petits escarabats. Altres contenien ossos mastegats per depredadors que, com les hienes avui dia, trituraven els ossos per obtenir sals i medul·la. Els copròlits dels primers grans dinosaures herbívors, els sauròpodes de coll llarg, van sorprendre els investigadors perquè contenien grans quantitats de falgueres, però també altres tipus de plantes i carbó vegetal. La hipòtesi dels paleontòlegs és que el carbó vegetal s'ingeria per desintoxicar el contingut de l'estómac, ja que les falgueres poden ser tòxiques per als herbívors.","description":"Investigadors suecs analitzen més de 500 mostres de material digestiu conservades a l'actual Polònia","keywords":["restes","femta","vomit","demostren","dinosaures","dominar","terra"],"interactionStatistic":0}</script> <link rel="alternate" title="Ciència i medi ambient" href="/rss/category/section/230861/" type="application/rss+xml" />  <script> window.appConfig = window.appConfig || { subscription: { url: 'https://subscripcions.ara.cat/', profileUrl: 'https://perfil.ara.cat', cardUrl: 'https://subscripcions.ara.cat/perfil/targeta', newsletterUrl: 'https://subscripcions.ara.cat/usuari/newsletters/' } }; </script>  <script type="text/javascript">window.gdprAppliesGlobally=true;(function(){function a(e){if(!window.frames[e]){if(document.body&&document.body.firstChild){var t=document.body;var 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ARA 28 November de 2024"},"date":"2024-11-27T23:00:00+00:00","dateString":"28\/11\/2024","pdf":{"id":0,"url":"https:\/\/www.ara.cat\/api\/front\/archive\/publication\/5214286","alt":"Diari ARA 28 November de 2024","mimeType":"application\/pdf","filesize":6831337,"filename":"Diari ARA 28 November de 2024"},"type":{"name":"Diari ARA","value":"ara"}},"theme":null,"showDescobreixMenuItem":true,"showMateixMenuItem":true,"site":{"alias":"ara","name":"Ara.cat","url":"https:\/\/www.ara.cat"}}"></ara-burger-mobile> </transition> </header> </ara-header> </div> <div class="layout"> <div class="layout-left"> <div class="ara-opening article ara-opening--standard" style=""> <div class="ara-opening-info"> <div class="breadcrumbs"> <a class="breadcrumbs--item" href="https://www.ara.cat/ciencia-medi-ambient/"> Ciència i medi ambient </a> </div> <div class="topic-wrapper"> <div class="topic"> Paleontologia </div> </div> <h1 class="title"> Les restes de femta i vòmit que demostren com els dinosaures van dominar la Terra </h1> <h2 class="subtitle">Investigadors suecs analitzen més de 500 mostres de material digestiu conservades a l'actual Polònia</h2> <div class="translation-wrapper"> <div class="available-translations"> <ul class="translations"> <li class="translation"> <a class="translation-link" title="Leer en castellano" href="https://es.ara.cat/ciencia-tecnologia/restos-heces-vomito-demuestran-dinosaurios-dominaron-tierra_1_5214041.html">Leer en castellano</a> </li> </ul> </div> </div> </div> <ara-multimedia-visor :id="5214038" :image-visor='{"type":"image","image":{"id":0,"sources":[{"src":"https:\/\/static1.ara.cat\/clip\/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_default_0.jpg","mimeType":"image\/jpeg","widthRatio":16,"heightRatio":9,"srcset":"https:\/\/static1.ara.cat\/clip\/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_1600w_0.jpg 1600w, https:\/\/static1.ara.cat\/clip\/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_1200w_0.jpg 1200w, 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falgueres a l'ecosistema del Jur\u00e0ssic primerenc de Soltykow.","sourcesByAspectRatio":[],"signature":""},"title":"Reconstrucci\u00f3 art\u00edstica de dinosaures sauropodomorfs herb\u00edvors que menjaven falgueres a l'ecosistema del jur\u00e0ssic primerenc de Soltykow.","id":5214038,"signature":"Marcin Ambrozik \/ Nature"}' :template='"standard"'> <figure class="image"> <picture> <source type="image/webp" srcset="https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_1600w_0.webp 1600w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_1200w_0.webp 1200w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_978w_0.webp 978w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_900w_0.webp 900w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_800w_0.webp 800w, 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https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_560w_0.jpg 560w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_512w_0.jpg 512w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_400w_0.jpg 400w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_272w_0.jpg 272w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_200w_0.jpg 200w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_192w_0.jpg 192w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_167w_0.jpg 167w, https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_158w_0.jpg 158w" sizes="(max-width: 600px) 100vw, (max-width: 839px) 600px, 720px"> <img src="https://static1.ara.cat/clip/6f033d47-0b38-4263-a66c-393461ae427f_16-9-aspect-ratio_default_0.jpg" alt="Reconstrucció artística de dinosaures sauropodomorfs herbívors que menjaven falgueres a l'ecosistema del Juràssic primerenc de Soltykow."> </picture> <figcaption class="footer"> <span class="text">Reconstrucció artística de dinosaures sauropodomorfs herbívors que menjaven falgueres a l'ecosistema del juràssic primerenc de Soltykow.</span> <span class="author">Marcin Ambrozik / Nature</span> </figcaption> </figure> </ara-multimedia-visor> </div> <div class="opening-actions opening-actions--standard "> <div class="opening-actions--content"> <div class="opening-actions--info"> <div class="opening-actions--date"> 27/11/2024 </div> </div> </div> <ara-action-bar :content-id="5213871" :share-url="{"text":"Les restes de femta i v\u00f2mit que demostren com els dinosaures van dominar la Terra","title":"Les restes de femta i v\u00f2mit que demostren com els dinosaures van dominar la Terra","href":"https:\/\/www.ara.cat\/1_4f8eaf","target":null,"rel":null}" :num-comments="0" :show-give-away-button="true" :title=""Les restes de femta i v\u00f2mit que demostren com els dinosaures van dominar la Terra"" :interviewed="""" :visible-comments="true"> <div class="detail"> <span class="ara-icon"><svg viewBox="0 0 18 21" version="1.1" xmlns="http://www.w3.org/2000/svg"><path d="M12,0 L6,0 L6,2 L12,2 L12,0 Z M8,13 L10,13 L10,7 L8,7 L8,13 Z M16.03,6.39 L17.45,4.97 C17.02,4.46 16.55,3.98 16.04,3.56 L14.62,4.98 C13.07,3.74 11.12,3 9,3 C4.03,3 0,7.03 0,12 C0,16.97 4.02,21 9,21 C13.98,21 18,16.97 18,12 C18,9.88 17.26,7.93 16.03,6.39 Z M9,19 C5.13,19 2,15.87 2,12 C2,8.13 5.13,5 9,5 C12.87,5 16,8.13 16,12 C16,15.87 12.87,19 9,19 Z"></path></svg> </span> <span class="detail--text">2 min</span> </div> </ara-action-bar> </div> <div class="ara-body"> <p ><span class='place'>Barcelona</span>Els dinosaures van dominar la Terra fa 200 milions d'anys, però el camí que van seguir fins a assolir la supremacia en els ecosistemes terrestres era una incògnita. Fins ara. Investigadors de la Universitat d'Uppsala, a Suècia, ho han resolt gràcies a les mostres fòssils de femta i vòmits d'aquests rèptils gegants, mitjançant les quals han aconseguit noves pistes sobre la seva alimentació. La investigació, que publica aquest dimecres la revista <em>Nature</em>, revela que l'increment de l'activitat volcànica de l'època va provocar canvis ambientals que van afavorir l'aparició d'una gamma més diversa de plantes per alimentar-se. Això, per un costat, va permetre que hi hagués noves espècies d'herbívors més grossos i, per l'altre, dinosaures carnívors que els caçaven i, per tant, també eren més grossos. </p> <ara-multimedia-visor :id="5213906" :image-visor='{"type":"image","image":{"id":1045588,"sources":[{"src":"https:\/\/static1.ara.cat\/clip\/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_default_1045588.jpg","mimeType":"image\/jpeg","widthRatio":2590,"heightRatio":3931,"srcset":"https:\/\/static1.ara.cat\/clip\/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_1600w_1045588.jpg 1600w, https:\/\/static1.ara.cat\/clip\/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_1200w_1045588.jpg 1200w, https:\/\/static1.ara.cat\/clip\/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_978w_1045588.jpg 978w, https:\/\/static1.ara.cat\/clip\/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_900w_1045588.jpg 900w, 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https:\/\/static1.ara.cat\/clip\/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_192w_1045588.jpg 192w, https:\/\/static1.ara.cat\/clip\/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_167w_1045588.jpg 167w, https:\/\/static1.ara.cat\/clip\/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_158w_1045588.jpg 158w","svgPlaceholder":"data:image\/svg+xml,%3Csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 2590 3931\"%3E%3C\/svg%3E","placeholder":"https:\/\/static1.ara.cat\/clip\/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_default_1045588.jpg","type":"imageSourceBcubeClipper","extension":"jpg","sizesUrls":[]}],"alt":"Resta f\u00f2ssil de la femta d'un dinosaure.","title":"Resta f\u00f2ssil de la femta d'un 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f\u00f2ssil de la femta d'un dinosaure.","id":5213906,"signature":"Grzegorz Niedzwiedzki"}'> <figure class="image image-m"> <picture> <source type="image/webp" data-srcset="https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_1600w_1045588.webp 1600w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_1200w_1045588.webp 1200w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_978w_1045588.webp 978w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_900w_1045588.webp 900w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_800w_1045588.webp 800w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_775w_1045588.webp 775w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_574w_1045588.webp 574w, 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data-srcset="https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_1600w_1045588.jpg 1600w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_1200w_1045588.jpg 1200w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_978w_1045588.jpg 978w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_900w_1045588.jpg 900w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_800w_1045588.jpg 800w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_775w_1045588.jpg 775w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_574w_1045588.jpg 574w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_560w_1045588.jpg 560w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_512w_1045588.jpg 512w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_400w_1045588.jpg 400w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_272w_1045588.jpg 272w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_200w_1045588.jpg 200w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_192w_1045588.jpg 192w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_167w_1045588.jpg 167w, https://static1.ara.cat/clip/f92e4bec-f189-41ec-a10a-e7b266474852_source-aspect-ratio_158w_1045588.jpg 158w" sizes="100vw" data-sizes="100vw"> <img class="lazy" src="data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 2590 3931"%3E%3C/svg%3E" alt="Resta fòssil de la femta d'un dinosaure."> </picture> <figcaption class="footer"> <span class="text">Resta fòssil de la femta d'un dinosaure.</span> <span class="author">Grzegorz Niedzwiedzki</span> </figcaption> </figure> </ara-multimedia-visor> <p >Per arribar a aquestes conclusions els autors han analitzat més de 500 restes fossilitzades de material digestiu (com ara excrements i vòmits) del sud-est de Polònia. Aquestes mostres, que s'anomenen copròlits, corresponen als períodes triàsic i juràssic. Si bé els registres fòssils mostren que els dinosaures van evolucionar durant la part mitjana del període triàsic, fa entre 247 i 237 milions d'anys, el seu domini en els ecosistemes no es va veure fins a principis del període juràssic, fa uns 200 milions d'anys. L'equip ha identificat restes d'aliments no digerits, des de plantes fins a altres animals, per reconstruir les interaccions dels dinosaures dins dels ecosistemes i determinar com i quan va començar el seu regnat a la Terra.</p> <ara-advertising-position type="content"></ara-advertising-position> <h3 class="ara-body-title">Grans quantitats de plantes</h3> <p >"Estudiar restes d'aliments no digerits per determinar <em>qui es va menjar a qui</em> en el passat és un veritable treball de detectiu", argumenta Martin Qvarnström, l'autor principal de l'estudi, en un comunicat de la universitat sueca. L'investigador defensa que examinar què menjaven els animals i com van interactuar amb el seu entorn proporciona una "informació inestimable sobre com van assolir la supremacia". Es tracta d'una investigació a partir de restes fòssils recollides durant 25 anys i que han fet conjuntament amb investigadors de Noruega, Polònia i Hongria. </p> <ara-advertising-position type="content"></ara-advertising-position> <p >Els copròlits analitzats contenien restes de peixos, insectes, animals més grans i plantes, alguns inusualment ben conservats, inclosos petits escarabats. Altres contenien ossos mastegats per depredadors que, com les hienes avui dia, trituraven els ossos per obtenir sals i medul·la. Els copròlits dels primers grans dinosaures herbívors, els sauròpodes de coll llarg, van sorprendre els investigadors perquè contenien grans quantitats de falgueres, però també altres tipus de plantes i carbó vegetal. La hipòtesi dels paleontòlegs és que el carbó vegetal s'ingeria per desintoxicar el contingut de l'estómac, ja que les falgueres poden ser tòxiques per als herbívors.</p> </div> <aside class="ara-recirculation "> <div class="rec-comments"> <ara-comments custom-text="" :content-id="5213871" :cached-num-comments="0" :commentable="true" custom-html-modals-register="<style>.tarifa-card{text-align:center;font-family:Ringside,sans-serif;background-color:#fff;padding:24px;border:1px solid #0076a8;border-radius:16px;margin-top:24px}.tarifa-card .preu-wrapper{margin:24px 0}.tarifa-card p.p1{font-weight:800;font-size:20px;line-height:100%;margin:0 0 12px 0}.tarifa-card a.p6,.tarifa-card p.p6{font-size:14px;line-height:15px}.tarifa-card p.subtitle{font-weight:400;font-size:18px;line-height:120%}.tarifa-card p.preu{font-size:30px;margin:4px 0}.tarifa-card .preu-antic{text-decoration:line-through;color:#888}.tarifa-card .light{color:#555}</style> <div class="tarifa-card"> <p class="p1">Digital 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