Glomospira irregularis ( Grzybowski, 1898 )

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 : 26-28

Glomospira irregularis ( Grzybowski, 1898)

Figure 13.27

1898 Ammodiscus irregularis ; Grzybowski, p. 285, pl. 11, figs. 2, 3.

1966 Glomospira irregularis (Grzybowski) ; Geroch, p. 460, pl. 8, figs. 11, 12.

2005 Glomospira irregularis (Grzybowski) ; Kender, Kaminski, and Cieszkowski, p. 261, fig. 10Q.

2009 Glomospira irregularis (Grzybowski) ; Kender, Kaminski, and Jones, p. 496, pl. 2, fig. 12.

Material. 10 specimens from six samples.

Description. Test free composed of a tube-like undivided chamber streptospirally coiled. Wall thick, finely agglutinated, smooth surface. Aperture at the end of the tubular chamber.

Distribution. Cosmopolitan species known from the Cretaceous to Recent ( Kender et al., 2009).

Figures

FIGURE 13. Scanning electron micrographs of Psammosphaeridae (1-4) and Ammodiscidae (5-27) from the Caltavuturo Formation cropping out at Portella Colla. 1, Psammosphaera cf. laevigata White, 1928, PCs0. 2, Psammosphaera sp. 1, PC13. 3, Psammosphaera sp. 2, PC060615. 4, Psammosphaera sp. 3, PC060625. 5, Ammodiscus cretaceus (Reuss, 1845), PC22. 6, Hyperammina sp., PC060625. 7-8, Ammodiscus incertus (d’Orbigny, 1839), PC060603 (7) and PC13 (8). 9-11, Ammodiscus tenuisimus (Gümbel, 1862), PC22 (9), PC060615 (10) and PC060615 (11). 12-13, Ammodiscus latus Grzybowski, 1898, PC11 (12) and PC11 (13). 14, Ammodiscus peruvianus Berry, 1928, PC060617. 15-16, Ammodiscus cf. latus Grzybowski, 1898, PC11. 17, Ammodiscus sp. 1, PC11. 18, Ammodiscus sp. 2, PC15. 19, Ammodiscus sp. 3, PC060603. 20, Annectina biedai Gradstein and Kaminski, 1997, PC060618. 21, Annectina cf. grzybowski (Jurkiewicz, 1960), PC060617. 22, Glomospira sp. 2, PC15. 23, Glomospira sp. 1, PC11. 24, Glomospira sp. 3, PC13. 25-26. Glomospira serpens (Grzybowski, 1898), PC060617 (25) and PC060618 (26). 27, Glomospira irregularis (Grzybowski, 1898), PC060618. Scale bar equals 0.5 mm.