Different views of one specimen of Sinuloculina mayeriana
My taxonomic suggestion is based upon: The Fossil Foraminifera of the Tertiary Basin of Vienna, Revision of the monograph by ALCIDE d'ORBIGNY (1846) by
ADOLF PAPP, MANFRED E. SCHMID, ABHANDLUNGEN DER GEOLOGISCHEN BUNDESANSTALT, Band 37, Wien 1985