Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 7. 1976. (Budapest, 1976)

PLATE 4. 1. Photomicrograph of a thin section showing axial sections in Operculinoides daviesi HASSAN (x 30) 2. Photomicrograph of a thin section showing axial section in Operculina jiwani DAVIES granids n. ssp. (x 20) 3. Photomicrograph of a thin section showing axial section in Ranikothalia soldadensis (VAUGHAN Cole) (x 20) 4. Photomicrograph of a thin section showing axial sections in Nummulites globulus LEYMERIE (x 30)