Meyn, H.; Vespermann, J. (1994). Taxonomic revision of the Lower Cretaceous foraminifera from SE lower Saxony of Roemer (1839, 1841, 1842), Koch (1851) and Reuss (1863). Senckenbergiana Lethaea. 74(1-2): 49-272. page(s): p. 202, pl. 47, figs. 1-10 (neotype fig. 2).
