ORBi: Fischer Valentin - A new Barremian (Early Cretaceous) ichthyosaur from western Russia

Reference : A new Barremian (Early Cretaceous) ichthyosaur from western Russia


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
	To cite this reference:	http://hdl.handle.net/2268/92828

Title :	A new Barremian (Early Cretaceous) ichthyosaur from western Russia
Language :	English
Author, co-author :	Fischer, Valentin [Université de Liège - ULg > Département de géologie > Paléontologie animale et humaine >]
	Masure, Edwige [Université Pierre et Marie Currie - Paris 6 - UPMC > UMR CNRS 7207 > > >]
	Arkhangelsky, Maxim [Saratov State university > > > >]
	Godefroit, Pascal [Institut Royal des Sciences Naturelles de Belgique > Paléontologie > > >]
Publication date :	2011
Journal title :	Journal of Vertebrate Paleontology
Volume :	31
Issue/season :	5
Pages :	1010-1025
Audience :	International
ISSN :	0272-4634
e-ISSN :	1937-2809
Keywords :	[en] Ichthyosauria ; Ophthalmosauridae ; Barremian ; Early Cretaceous ; Russia ; Ecological diversity
Abstract :	[en] A new ophthalmosaurid ichthyosaur, Sveltonectes insolitus gen. et sp. nov., is described from a sub-complete and three-dimensionally preserved specimen from the late Barremian of western Russia. This new taxon is supported by 11 cranial, dental, and postcranial autapomorphies, and is also characterized by features previously considered as autapomorphic for some other Ophthalmosauridae, such as a processus narialis on the prefrontal and relatively long hindfins with pre- and postaxial accessory digits. We conducted a new phylogenetic analysis of Thunnosauria, which supports a ‘Stenopterygius-origin’ for Ophthalmosauridae. Sveltonectes is regarded as the sister taxon of Aegirosaurus, which shares a similar skull roof construction. Contrary to most other Cretaceous ichthyosaurs, Sveltonectes is characterized by delicate and sharply pointed teeth, confirming that the Ophthalmosauridae were ecologically highly diversified during the Early Cretaceous
Research units :	Centre de Geosciences
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Target :	Researchers ; Professionals ; Students ; General public
Permalink :	http://hdl.handle.net/2268/92828
Mentions required by the publisher for OA :	OA payant

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