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SpaceX
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NASA
СпутникиРНSpaceXРоскосмосNASANote "Description: Redescription: The redescription of the genus is based on Özgen (2000) and here described Nurdanella paleocenica n. sp. (Plate IV, figures 7-12). Two generations have subspheric to ovoid test with imperforate, porcellaneous calcareous wall (Özgen, 2000, plate I, figure 4) and (Plate IV, figure 7). Very small microsphere is followed by two rows of quinqueloculine chambers (Özgen, 2000, plate I, figures 3,7,12,14) and (Plate IV, figure 13). Later undivided adult chambers are arranged in a planispiral pattern (Özgen, 2000, plate I, figure 1, Figure A) and (Plate IV, figures 9,11). The connection of the long and low planispiral chambers provide by the crenated/ notched aperture (Özgen, 2000, plate I, figure 4) and (Plate IV, figure 7). The megalospheric form has a small, subspheric test with imperforate porcellaneous calcareous wall (Özgen, 2000, plate I, figures 10,11). Almost spheric and large megalosphere is followed by 1-1.5 rows of triloculine early chambers (Özgen, 2000, plate I figu" for taxon Nurdanella Özgen, 2000 † has been added by Lorenzo Consorti via the webinterface on 2026-08-17T09:09:46+00:00
Redescription: The redescription of the genus is based on Özgen (2000) and here described Nurdanella paleocenica n. sp. (Plate IV, figures 7-12). Two generations have subspheric to ovoid test with imperforate, porcellaneous calcareous wall (Özgen, 2000, plate I, figure 4) and (Plate IV, figure 7). Very small microsphere is followed by two rows of quinqueloculine chambers (Özgen, 2000, plate I, figures 3,7,12,14) and (Plate IV, figure 13). Later undivided adult chambers are arranged in a planispiral pattern (Özgen, 2000, plate I, figure 1, Figure A) and (Plate IV, figures 9,11). The connection of the long and low planispiral chambers provide by the crenated/ notched aperture (Özgen, 2000, plate I, figure 4) and (Plate IV, figure 7). The megalospheric form has a small, subspheric test with imperforate porcellaneous calcareous wall (Özgen, 2000, plate I, figures 10,11). Almost spheric and large megalosphere is followed by 1-1.5 rows of triloculine early chambers (Özgen, 2000, plate I figures 10, 11). Later undivided adult chambers are coiled in a planispiral mode (Plate IV, figure 13). Dimorphism distinct, Thanetian, Lutetian.