Thalattosauria (Greek for "sea lizards") is an extinct order of prehistoric marine reptiles that lived in the Middle to Late Triassic. Thalattosaurs were...

Thalattosaurus from California. Thalattosauroids are one of two groups of Thalattosauria, the other being Askeptosauroidea. Thalattosauroids make up the "traditional"...

The position of the highly derived Mesozoic marine reptile groups Thalattosauria, Ichthyosauromorpha and Sauropterygia within Neodiapsida is uncertain...

clade with two other groups of marine reptiles, Ichthyosauromorpha and Thalattosauria, with this clade either being placed as non-saurian diapsids or as basal...

Permian period. However, subsequent study determined it was a member of Thalattosauria, a group of unusual marine reptiles that lived during the Triassic period...

Silvio Renesto (2005). "A possible find of Endennasaurus (Reptilia, Thalattosauria) with a comparison between Endennasaurus and Pachystropheus". Neues...

marine reptiles. Askeptosauroidea is one of two major subgroups of Thalattosauria, the other being Thalattosauroidea. It includes the family Askeptosauridae...

Lepidosauromorpha Unnamed infrasubclass Infraclass Ichthyosauria † Order Thalattosauria † Superorder Lepidosauriformes Order Sphenodontida – tuatara Order Squamata...

(2006). "A new species of the thalattosaur genus Anshunsaurus (Reptilia: Thalattosauria) from the Middle Triassic of Guizhou Province, southwestern China"....

The Besano Formation is a geological formation in the southern Alps of northwestern Italy and southern Switzerland. This formation, a thin but fossiliferous...