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Theretairus; Fossil range: Late Jurassic PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia;
Phylum:	Chordata;
Subphylum:	Vertebrata;
Class:	Sauropsida;
Subclass:	Diapsida;
Infraclass:	Lepidosauria;
Order:	Sphenodontia;
Genus:	Theretairus;

Theretairus is a Late Jurassic genus of sphenodont reptile from the Morrison Formation of western North America,^[1] present in stratigraphic zones 5 and 6.^[2]

[edit] See also

Paleontology portal

^ Foster, J. (2007). "Table 2.1: Fossil Vertebrates of the Morrison Formation." Jurassic West: The Dinosaurs of the Morrison Formation and Their World. Indiana University Press. pp. 58-59.
^ Foster, J. (2007). "Appendix." Jurassic West: The Dinosaurs of the Morrison Formation and Their World. Indiana University Press. pp. 327-329.

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