Lomnicki, J. L. M. (1900). Przyczynek do znajomosci fauny otwornic Miocenu Wieliczki-Contribution to the knowledge of the foraminiferal fauna of the Miocene of Wieliczka. Kosmos. 24[1899]: 220-228., available online at
https://www.sbc.org.pl/dlibra/publication/29966/edition/26877 page(s): p. 221 pl. 1 fig. 1