(Small curved animal).
Named By: E. Henning - 1922.
Synonyms: Chalepotherium plieningeri, Mucrotherium, Uniserium.
Classification: Chordata, Synapsida, Therapsida, Cynodontia, Tritylodontidae.
Species: O. triserialis (type), O. biserialis, O. lufengensis, O. major, O. minor.
Size: About 30 centimetres long.
Known locations: China - Lufeng Formation. Germany - Exter Formation. United Kingdom (England and Wales). USA, Arizona - Kayenta Formation.
Time period: Hettangian to Pleinsbachian of the Jurassic.
Fossil representation: Partial remains.
Occasionally interpreted as a very primitive mammal, Oligokyphus is today usually seen as a very late surviving cynodont, as well as one of the last of the non-mammalian therapsids. Still, Oligokyphus has been stated as being akin to a modern day weasel in terms of ecological niche, hunting for small animals on the ground, though it is also plausible that Oligokyphus may have also been a climber.
- Die Säugerzähne des württembergischen Rhät-Lias-Bonebeds. - Neues Jahrbuch für Mineralogie, Geologie und Paläontologie 46:181-267. - E. Henning - 1922.
- The Liassic therapsid Oligokyphus. - British Museum (Natural History), London 1-149. - W. Kühne - 1956.
- Oligokyphus (Cynodontia: Tritylodontidae) from the Lower Lufeng Formation (Lower Jurassic) of Yunnan, China. - Journal of Vertebrate Paleontology 13(4):477-482. - Z. Luo & A. Sun - 1993.