type species: Polyperibola christiani Liska, 1980: OD.

Polyperibola Liska. 1980 _(*1874), p. 136.Test subspherical, early globular chambers enlarging rapidly as added, in a trochospiral coil of two to three whorls, final chamber added in a different plane and overlaps the umbilical side of the previous test. bullae and supplementary chambers cover the sutures of the spiral side. and tend to obscure the early whorls, sutures distinct, depressed: wall calcareous, of optically radial calcite, thin. (pall perforate. surface of the trochospiral prat of the test lightly pustulose (possibly representing broken spine bases). wall of sup­piementary chambers and bullae thinner. smoother. more finely perforate and more artreous in appearance than that of the primary chambers: primary aperture slitlike in the early stage, adult with numerous strongly arched sutural apertures at the margin of the final chamber, bullae and supplementary cham­bers may have similar arched infralaminal openings, all openings bordered by narrow _imperforate rims. no sutural supplementary apertures present on the spiral side. M. Miocene (Torionian); Trinidad and Tobago: Cyprus.