Reticulophragmium acutidorsatum ( Hantken,

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 : 45-46

Reticulophragmium acutidorsatum ( Hantken,

1868)

Figure 21.1-3

1868 Haplophragmium acutidorsatum ; Hantken, p. 82, pl.1, fig. 1.

2004 Cyclammina acutidorsata (von Hantken) ; Green, Kaminski and Sikora, p. 127, pl. 4, fig. 1.

2006 Reticulophragmium acutidorsatum (Hantken) ; Kaminski, Silye, and Kender, p. 390, pl. 6, fig. 3.

2009 Reticulophragmium acutidorsatum (Hantken) ; Kender, Kaminski, and Jones, p. 504, pl. 8, fig. 9.

Material. 101 specimens from 20 samples.

Description. Test free, biconvex with acute periphery; planispiral involute coil with 12–14 chambers in the last whorl increasing gradually in size. Sutures few incise, aperture an arc at the base of the ultimate chamber; wall alveolar and finely agglutinated.

Distribution. Late Eocene-Miocene.

Figures

FIGURE 21. Scanning electron micrographs of Cyclamminidae from the Caltavuturo Formation cropping out at Portella Colla. 1-3, Reticulophragmium acutidorsatum (Hantken, 1868), PC3. 4-7, Reticulophragmium amplectens (Grzybowski, 1898), PC3. 8-10, Reticulophragmium rotundidorsatum (Hantken, 1875), PC060624. 11-12, Cyclammina cancellata Brady, 1879, PC22. 13-14, Reticulophragmium projectum Schröder-Adams and McNeil, 1994, PC060624. 15, Cyclammina placenta (Reuss, 1851), PC11. Scale bar equals 0.5 mm.