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[1]

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]

See also

Paleontology portal

• Prehistoric reptile
• Paleobiota of the Morrison Formation

References

1. ^ ^{a b} http://paleobackup.nceas.ucsb.edu:8090/cgi-bin/bridge.pl
2. ^ 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.
3. ^ Foster, J. (2007). "Appendix." Jurassic West: The Dinosaurs of the Morrison Formation and Their World. Indiana University Press. pp. 327-329.