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Here, 3D comparative biomechanical analyses of the extinct giant early amphibian group of stereospondyls together with living lissamphibians and crocodiles, shows that: i) stereospondyls had peculiar palaeoecological niches with proper bites and stress patterns very different than those of giant salamanders and crocodiles; ii) their extinction may be correlated with the appearance of neosuchians, which display morphofunctional innovations. Stereospondyls weathered the end-Permian mass extinction, re-radiated, acquired gigantic sizes and dominated (semi) aquatic ecosystems during the Triassic. Because these ecosystems are today occupied by crocodilians and stereospondyls are extinct amphibians, their palaeobiology is a matter of an intensive debate: stereospondyls were<jats:italic>a priori<\/jats:italic>compared with putative living analogous such as giant salamanders and\/or crocodilians and our new results try to close this debate.<\/jats:p>","DOI":"10.1038\/srep30387","type":"journal-article","created":{"date-parts":[[2016,7,26]],"date-time":"2016-07-26T09:21:20Z","timestamp":1469524880000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":34,"title":["Comparative 3D analyses and palaeoecology of giant early amphibians (Temnospondyli: Stereospondyli)"],"prefix":"10.1038","volume":"6","author":[{"given":"Josep","family":"Fortuny","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jordi","family":"Marc\u00e9-Nogu\u00e9","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.-S\u00e9bastien","family":"Steyer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Soledad","family":"de Esteban-Trivigno","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eudald","family":"Mujal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Llu\u00eds","family":"Gil","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2016,7,26]]},"reference":[{"key":"BFsrep30387_CR1","first-page":"1","volume":"278","author":"RR Schoch","year":"1999","unstructured":"Schoch, R. 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