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Fig. 1. Infundibulum and marginal prolongation. A: Neoeponides bradyi (Le Calvez), oblique-ventral view showing infundibulum. SEM graph; Gulf of Aqaba, Red Sea; Recent. B: Eponides repandus (Fichtel et Moll), ventral view showing marginal prolongation. SEM graph; Gulf of Aqaba, Red Sea; Recent. C: Schematic drawing showing position of marginal prolongations in respect to ventral and dorsal test morphology in the last whorl of Eponides repandus; gray: dorsal view with raised sutures; red: outline of chamber walls at level ventrally below periphery; green: ventral ouline of chambers below level of marginal prolongation; a: aperture; inf: infundibulum; mpr: marginal prolongation; per: (imperfotate) periphery; s(d): (oblique) septum (as seen in dorsal view); s(per): position of septum at level of periphery; ss(v): (radial) septal suture in ventral view; (Hottinger, 2006; fig. 61)[1] CC/BY-NC-SA)


  • according to Hottinger (2006):

INFUNDIBULUM - ( =inframarginal sulcus; scrobis septalis, pars auct.) – a distinct proximally directed infold in a distal chamber wall located beneath the periphery on the umbilical side of trochospiral forms.

See also


Hottinger (2006), Illustrated glossary of terms used in foraminiferal research. Carnets de Géologie, Memoir 2, ISSN 1634-0744

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