Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 7. 1976. (Budapest, 1976)
PLATE 3. 1. Photomicrograph of a thin section showing axial section in Operculina jiwani DAVIES grandis n. ssp. (x 20) 2. Photomicrograph of a thin section showing axial section in Operculina jiwani DAVIES (x 20) 3. Photomicrograph of a thin section showing axial sections in Assilina subsplnosa DAVIES (x 20) 4. Photomicrograph of a thin section showing equatorial sections in Assilina ranikoti NUTTAL (x 20)
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