Subreophax scalaris ( Grzybowski, 1896 )

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 : 24

Subreophax scalaris ( Grzybowski, 1896)

Figure 14.10

1896 Reophax guttifera Brady var. scalaria ; Grzybowski, p. 277, pl. 8, fig. 26a, b.

1977 Reophax scalaria Grzybowski ; Samuel, p. 35, 36, pl. 3, fig. 6a, b, pl. 19, fig. 4.

1992 Subreophax scalaris (Grzybowski) ; Morlotti and Kuhnt, p. 223, pl. 3, fig. 5.

2005 Subreophax scalaris (Grzybowski) ; Kaminski and Gradstein, p. 278, pl. 55, figs. 1-7.

2009 Subreophax scalaris (Grzybowski) ; Kender, Kaminski, and Jones, p. 497, pl. 3, figs. 3, 4.

Material. Six specimens from six samples.

Description. Test free, uniseriate, elongated,

curved axis. Several discoidal and compressed chambers partially embraced increasing very slowly in size.

Distribution. Lowermost Cretaceous to Oligocene

( Kaminski and Gradstein, 2005), more recently reported also from the Miocene by Kender et al.

(2009).

Figures

FIGURE 14. Scanning electron micrographs of Hormosinelloidea from the Caltavuturo Formation cropping out at Portella Colla. 1, Ammolagena clavata (Jones and Parker, 1860) on a specimen of Psammosiphonella cylindrica (Glaessner, 1937), PCs0. 2, Ammolagena clavata (Jones and Parker, 1860), PC060607. 3-7, Caudammina gutta Benedetti and Pignatti, 2009, PC18. 8, Subreophax cf. guttifer (Brady, 1881), PC15. 9, Subreophax cf. pseudoscalaris (Samuel, 1977), PCs0. 10, Subreophax scalaris (Grzybowski, 1896), PC11. 11-12, Subreophax splendidus (Grzybowski, 1898), PC060624 (11) and PC11 (12). 13, Arthrodendron subnodosiformis (Grzybowski, 1898), PC060615. 14, Arthrodendron grandis (Grzybowski, 1898), PC050515. 15-19, Kalamopsis grzybowskii (Dylążanka, 1923), PC18 (15), PC11 (16), PC18 (17), PC060621 (18) and PC060621 (19). Scale bar equals 0.5 mm.