DECKERELLINA Reytlinger, 1950

Type species: Deckerellina istiensis Reytlinger, 1950; OD.

Deckerellina Reytlinger, 1950 (*2597), p. 57.

Test biserial throughout, ovoid in section, sutures slightly depressed and horizontal; wall calcareous, microgranular, with poorly developed radial layer and may have patchy exter­nal agglutinated coating; aperture in the early stage a low interiomarginal opening but adult aperture of two parallel slits, one interiomarginal and the other a curved areal slit a short distance above the base of the chamber face. L. Carboniferous (Visean) to M. Carbonifer­ous; USSR; Britain.