Reference : Extinction of fish-shaped marine reptiles associated with reduced evolutionary rates ...
Scientific journals : Article
Life sciences : Environmental sciences & ecology
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/194452
Extinction of fish-shaped marine reptiles associated with reduced evolutionary rates and global environmental volatility
English
Fischer, Valentin mailto [Université de Liège > Département de géologie > Evolution and diversity dynamics lab >]
Bardet, Nathalie [> >]
Benson, Roger [> >]
Arkhangelsky, Maxim [> >]
Friedman, Matt [> >]
8-Mar-2016
Nature Communications
Nature Pub.lishing Group
7
10825
1-11
Yes (verified by ORBi)
International
2041-1723
London
United Kingdom
[en] Ichthyosauria ; Extinction ; Biodiversity ; Climate change ; Evolution
[en] Despite their profound adaptations to the aquatic realm and their apparent success throughout the Triassic and the Jurassic, ichthyosaurs became extinct roughly 30 million years before the end-Cretaceous mass extinction. Current hypotheses for this early demise involve relatively minor biotic events, but are at odds with recent understanding of the ichthyosaur fossil record. Here, we show that ichthyosaurs maintained high but diminishing richness and disparity throughout the Early Cretaceous. The last ichthyosaurs are characterized by reduced rates of origination and phenotypic evolution and their elevated extinction rates correlate with increased environmental volatility. In addition, we find that ichthyosaurs suffered from a profound Early Cenomanian extinction that reduced their ecological diversity, likely contributing to their final extinction at the end of the Cenomanian. Our results support a growing body of evidence revealing that global environmental change resulted in a major, temporally staggered turnover event that profoundly reorganized marine ecosytems during the Cenomanian.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; The Royal Society (UK) ; Foundation Vocatio
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/194452
10.1038/ncomms10825
http://www.nature.com/ncomms/2016/160308/ncomms10825/full/ncomms10825.html
http://reflexions.ulg.ac.be/en/ExtinctionIchthyosaurs

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