Luczkowska, E. (1974). Miliolidae (Foraminiferida) from the Miocene of Poland Part II. Biostratigraphy, palaeoecology and systematics. Acta Palaeontologica Polonica. 19 (1): 3-176., available online at
https://www.app.pan.pl/archive/published/app19/app19-003.pdf page(s): pp. 57-58 pl. 2 fig. 1-2 tf. 15/1-3