Test free, elongate, early stage planispiral, later biserial as in Spiroplectammina, nearly circular in section; wall finely agglutinated, interior of each chamber subdivided by about four thin radial vertical septula projecting in from the outer wall but not quite reaching the median septum separating the two series of chambers, less frequently a supplementary horizontal septulum may be present in later chambers; aperture a low interiomarginal slit. L. Cretaceous (U. Aptian to L. Albian); Spain