Les Reptiles Marins du toarcien (Jurassique inferieur) Belgo-Luxembougeois

Toarcian (Lower Jurassic) outcrops have yielded many marine reptiles Ichthyosauria, Thalattosuchia and Plesiosauria in Belgium and, principally, in Grand Duchy of Luxemburg. Their preservation allows a determination at a specific level as also the description of badly known anatomical characters. The study of ichthyosaurs required a systematic revision of the genus Stenoplerygius. A palaeogeographical synthesis of Toarcian marine reptiles is proposed. Important quantitative differences can be observed in the composition of marine reptiles' faunae from Württemberg (Germany), Yorkshire (England)... Mehr ...