Oligosoma is a genus of small to medium-sized skinks (family Scincidae). It is found only in New Zealand and in the Norfolk and Lord Howe groups. It belongs to the Eugongylus group; the genus Bassiana appears to be a fairly close relative (Austin & Arnold 2006).
Following a recent taxonomical study it has been suggested that the old Cyclodina genus be merged with Oligosoma. This renders Cyclodina an obsolete taxon. The species previously included in the Cyclodina genus are:
^Chapple, D.G., Ritchie, P.A. and Daugherty, C.H. (01/01/0001 00:00:00) Origin, diversification, and systematics of the New Zealand skink fauna (Reptilia: Scincidae). Molecular Phylogenetics and Evolution.
Austin, J.J. & Arnold, E.N. (2006): Using ancient and recent DNA to explore relationships of extinct and endangered Leiolopisma skinks (Reptilia: Scincidae) in the Mascarene islands. Molecular Phylogenetics and Evolution39(2): 503–511. doi:10.1016/j.ympev.2005.12.011 (HTML abstract)
Chapple, D.G; Ritchie, P. & Daugherty, C.H. (2009): Origin, diversification, and systematics of the New Zealand skink fauna (Reptilia: Scincidae). Molecular Phylogenetics and Evolution52(2): 470-487.