Thalattosauria

Thalattosauria
	Graphic representation of Askeptosaurus
Temporal occurrence
	Middle Triassic to Upper Triassic ( Ladinian to Carnic )
	242 to 228 million years
Locations
	Monte San Giorgio (Switzerland); North America; Asia;
Systematics
	Land vertebrates (Tetrapoda)
	Amniotes (Amniota)
	Sauropsida
	Eureptiles (Eureptilia)
	Diapsida
	Thalattosauria
Scientific name
	Thalattosauria
	Merriam , 1904

The thalattosaur are extinct aquatic living diapside reptiles that from the Central to the Upper Triassic lived in Europe, Asia and North America.

Fossils of the animals were initially found on Monte San Giorgio in the Swiss canton of Ticino and in the Hosselkus limestone in northern California . Finds from British Columbia , Nevada and China were later also known.

The thalattosauria were about a meter long, Askeptosaurus , the largest species, reached a length of 2.5 meters.

The systematic position of the thalattosauria is uncertain. They are probably close to the Archosauromorpha , but split off from them early on.

Thalattosauria
- Asceptosauroidea
  - Miodentosaurus
  - End nasaurus
  - Askeptosauridae
    - Anshunsaurus
    - Askeptosaurus
- Thalattosauroidea
  - Nectosaurus
  - Xinpusaurus
  - Agkistrognathus
  - Paralonectes
  - Thalattosaurus
  - Claraziidae
    - Clarazia
    - Hescheleria

literature

Martin Sander : Reptiles. 220 individual representations (= Haeckel library. Vol. 3). Enke, Stuttgart 1994, ISBN 3-432-26021-0 .

^ Dougal Dixon : The World Encyclopedia of Dinosaurs & Prehistoric Creatures. Lorenz, London 2007, ISBN 978-0-7548-1730-7 , pp. 116-117.

Commons : Thalattosauria - collection of images, videos and audio files