Thalattosauroidea information

Thalattosauroidea; Temporal range: Middle To Late Triassic, 247.2–215 Ma PreꞒ Ꞓ O S D C P T J K Pg N
	Life restoration of Nectosaurus halinus (right) and Thalattosaurus alexandrae (left)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	†Thalattosauria
Superfamily:	†Thalattosauroidea; Merriam, 1904
Subtaxa
	†Agkistrognathus; †Concavispina; †Gunakadeit; †Nectosaurus; †Paralonectes; †Thalattosaurus; †Wapitisaurus; †Xinpusaurus; †Claraziidae †Clarazia; †Hescheleria; ;
Synonyms
	Thalattosauria Nicholls, 1999;

Thalattosauroidea is a superfamily of thalattosaurs, a Triassic group of marine reptiles. It was named in 1904 by paleontologist John Campbell Merriam to include the genus Thalattosaurus from California. Thalattosauroids are one of two groups of Thalattosauria, the other being Askeptosauroidea. Thalattosauroids make up the "traditional" thalattosaurs with large downturned snouts, short necks, and long, paddle-like tails.

Thalattosauroidea information

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Thalattosauroidea

Thalattosauria

Thalattosaurus

Askeptosauroidea

Wapitisaurus

Sauropsida

Anapsid

Eureptilia

Gunakadeit

Mesosaurus

Longisquama

Archelosauria

Parareptilia

Champsosaurus

Varanopidae

Hyphalosaurus

Millerettidae

Neodiapsida

Mesosaur

Brazilosaurus

Kuehneosauridae

Askeptosauridae

Euryapsida

Drepanosaurus

Captorhinidae

Helveticosaurus

Bolosauridae

Eudibamus

Drepanosaur

Recumbirostra

Thalattosauroidea Temporal range: Middle To Late Triassic, 247.2–215 Ma PreꞒ Ꞓ O S D C P T J K Pg N

Life restoration of Nectosaurus halinus (right) and Thalattosaurus alexandrae (left)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	†Thalattosauria
Superfamily:	†Thalattosauroidea Merriam, 1904
Subtaxa
†Agkistrognathus †Concavispina †Gunakadeit †Nectosaurus †Paralonectes †Thalattosaurus †Wapitisaurus †Xinpusaurus †Claraziidae †Clarazia †Hescheleria
Synonyms
Thalattosauria Nicholls, 1999