Opisthias

Opisthias; Temporal range: Late Jurassic PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Subphylum:	Vertebrata
Class:	Reptilia
Subclass:	Diapsida
Infraclass:	Lepidosauria
Order:	Sphenodontia
(unranked):	Opisthodontia †
Genus:	Opisthias †
Species
	O. rarus † (type) Gilmore, 1905;

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Opisthias is a Late Jurassic genus of sphenodont reptile from the Morrison Formation of western North America,^[2] present in stratigraphic zones 2 and 4-6.^[3]

Distribution

Opisthias was from the United States (Colorado, Utah, and Wyoming).^[1]

↑ ^1.0 ^1.1 http://paleobackup.nceas.ucsb.edu:8090/cgi-bin/bridge.pl
↑ 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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