Rhabdammina discreta Brady, 1884

Benedetti, A, 2017, Eocene / Oligocene deep-water agglutinated foraminifers (DWAF) assemblages from the Madonie Mountains (Sicily, Southern Italy), Palaeontologia Electronica 20 (1), pp. 1-66 : 17-19

Rhabdammina discreta Brady, 1884

Figure 12.1-2

1884 Rhabdammina discreta ; Brady, p. 268, pl. 22, figs. 7, 8.

1896 Rhabdammina subdiscreta ; Grzybowski, p. 275, pl. 8, figs. 5, 6.

1954 Psammosiphonella discreta (Brady) ; Avnimelech, p. 65.

2005 Psammosiphonella discreta (Brady) ; Kaminski and Gradstein, p. 117, pl. 5/6, figs. 1-8.

Material. 134 specimens from 22 samples.

Description. Tubular and rectilinear test, oval in outline. Thick wall with coarse agglutinated grains. The test presents irregularly distanced constrictions, aperture a simple terminal opening.

Distribution. From Cretaceous to recent, cosmopolitan.

Figures

FIGURE 12. Scanning electron micrographs of Astrorhizida (1-13) and Saccamminidae (14-15) foraminifers from the Caltavuturo Formation cropping out at Portella Colla. 1-2, Rhabdammina discreta Brady, 1884, PCs0 (1) and PC060618 (2). 3, Rhabdammina eocenica Cushman and Hanna, 1927, PC060601. 4-5, Psammosiphonella cylindrica (Glaessner, 1937), PC11 (4) and PCs0 (5). 6-7, Psammosiphonella linearis (Brady, 1879), PC060618 (6) and PC11 (7). 8, Bathysiphon sp., MM12. 9, Nothia excelsa (Grzybowski, 1898), PC060603. 10, Nothia robusta (Grzybowski, 1898) with Ammolagena clavata (Jones and Parker, 1860), PC060621. 11, Nothia cf. latissima (Grzybowski, 1898), PC060624. 12-13, Rhizammina indivisa Brady, 1884, PC060621. 14-15, Psammosphaera irregularis (Grzybowski, 1896), PC13 (14) and PC22 (15). 16, Placentammna placenta (Grzybowski, 1898), PCs0. 17, Saccammina grzybowskii (Schubert, 1902), PC060621. Scale bar equals 0.5 mm.