A new pliosaurid from the Pliensbachian, Early Jurassic of Normandy, Northern France

被引：19

作者：

Vincent, Peggy ^{[1
,2
]}

Bardet, Nathalie ^{[1
]}

Mattioli, Emanuela ^{[3
,4
]}

机构：

[1] CNRS MNHN UPMC, UMR CR2P 7207, F-75005 Paris, France

[2] Staatliches Museum Nat Kunde, D-70191 Stuttgart, Germany

[3] CNRS, Lab Geol Lyon Terre, UMR 5276, F-69622 Villeurbanne, France

[4] Univ Lyon 1, ENS Lyon, F-69622 Villeurbanne, France

来源：

ACTA PALAEONTOLOGICA POLONICA | 2013年 / 58卷 / 03期

关键词：

Reptilia; Plesiosauria; Pliosauroidea; Cryonectes; Jurassic; Pliensbachian; France; CRANIAL ANATOMY; POLYCOTYLID PLESIOSAUR; REPTILIA; TOARCIAN; SAUROPTERYGIA; YORKSHIRE; SOMERSET; TAXONOMY; SKULL; SHALE;

D O I：

10.4202/app.2011.0113

中图分类号：

Q91 [古生物学];

学科分类号：

0709 ; 070903 ;

摘要：

Complete plesiosaur skeletons are relatively abundant in the Lower Jurassic of England and Germany, but are exceptional in France. A new specimen from Normandy (northern France), including incomplete skull, palate and mandible with several associated vertebrae, is here described and its pliosauroid affinities are discussed. Comparison of this new specimen with other plesiosaurians indicates that it belongs to a new genus and species: Cryonectes neustriacus. This new plesiosaurian taxon represents one of the most complete pliosaurids reported from the Pliensbachian, a stage that has yielded very few diagnostic plesiosaurian remains. Our preliminary phylogenetic analysis places Cryonectes in a basal position among Pliosauridae, and suggests that the radiation of this clade occurred several millions of years earlier than previously thought. This new taxon contributes to our understanding of Early Jurassic plesiosaur diversity.

引用

页码：471 / 485

页数：15

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