Fig. 10 Dictyoconus bakhtiari n in Orbitolinid Foraminifera From The Late Maastrichtian Of The Tarbur Formation (Zagros Zone, Sw Iran)

Fig. 10 Dictyoconus bakhtiari n. sp. from the late Maastrichtian of the Tarbur Formation, Naghan section, SW Iran. a, d Slightly oblique axial section of a megalospheric specimen (holotype!). b Centered axial section of a juvenile megalospheric specimen. Note the presence of tiny rudimentary septules in the deuteroconch. c Oblique axial section, partially passing through the initial spire with protoconch. e Oblique transverse section. f Tangential-oblique section of microspheric specimen. Abbreviations: de = deuteroconch, pr = protoconch, s = septum, pi = pillar, uz = undivided zone (between marginal and central zone). Thin-sections: 2NG 112 (a, d), 2NG 69 (b), 2NG 87 (c, e), 2NG 83 (f).