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| Reference : New ophthalmosaurids from Europe and Russia broaden the biodiversity of Early Cretaceous... |
| Scientific congresses and symposiums : Poster | |||
| Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography | |||
| http://hdl.handle.net/2268/101543 | |||
| New ophthalmosaurids from Europe and Russia broaden the biodiversity of Early Cretaceous ichthyosaurs | |
| English | |
Fischer, Valentin  [Université de Liège - ULg > Département de géologie > Paléontologie animale et humaine >] | |
| 2-Nov-2011 | |
| No | |
| International | |
| 71st Annual Meeting of the Society of Vertebrate Paleontology | |
| Las Vegas (NV) | |
| USA | |
| [en] Ichthyosauria ; Ophthalmosauridae ; Jurassic–Cretaceous boundary ; Extinction ; Diversity ; Extinction rate | |
| [en] Ophthalmosauridae is a successful clade of ichthyosaurs that rapidly diversified during the
Middle Jurassic. By Late Jurassic, Ophthalmosauridae were diverse, widespread, and formed an important component of the marine trophic webs. By contrast, the record of Berriasian- Aptian ichthyosaurs is extremely poor, and all ichthyosaurs from that interval have been referred to a single genus, Platypterygius, until recently. This apparent diversity drop led numerous authors to recognize a severe ichthyosaur extinction at the end of the Jurassic that left ichthyosaurs as a small group on the decline. New specimens from poorly sampled time periods (late Valanginian, late Hauterivian and late Barremian) in Europe and Russia contradict this latest Jurassic extinction hypothesis and show that new and highly derived as well as typically ‘Late Jurassic’ ichthyosaurs roamed the Eurasian archipelago during the Early Cretaceous. Moreover, these new forms occupied ecological niches markedly different from that of Platypterygius, significantly broadening the disparity and ecological diversity of Cretaceous ichthyosaurs | |
| Centre de Geoscience | |
| Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS | |
| Researchers ; Students ; General public | |
| http://hdl.handle.net/2268/101543 |
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