Karrerulina horrida (Mjatliuk, 1970)

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

Karrerulina horrida (Mjatliuk, 1970)

Figure 20.11

1970 Karreriella horrida ; Mjatliuk, p. 114-115, pl. 5, fig. 9, pl. 33, figs. 15-16c.

1996 Karrerulina horrida (Mjatliuk) ; Kaminski, Kuhnt, and Radley, p. 12, pl. 2, fig. 16.

2005 Karrerulina horrida (Mjatliuk) ; Kaminski and Gradstein, p. 473, pl. 117, figs. 1-11.

Material. 32 specimens from 15 samples.

Description. Test free elongated, rounded in trasversal section, composed of an initial trochospiral coil with 4–6 chambers per whorl, followed by a large-sized triseriate stage, and a final biseriate stage consisting of 1–2 whorls. Wall medium to finely agglutinated.

Distribution. Maastrichtian–Miocene ( Kaminski and Gradstein, 2005).

Figures

FIGURE 20. Scanning electron micrographs of Trochamminoidea (1-11, 13), Ataxophragmiidae (12, 17, 20-21), and Textulariina (14-16, 18-19, 22-23) from the Caltavuturo Formation cropping out at Portella Colla. 1, Trochammina sp. 1, PC060601. 2, Trochammina sp. 2, PC060601. 3, Trochammina sp. 3, PC060601. 4, Trochammina sp. 4, PC060604. 5, Trochammina sp. 5, PC060605. 6-10, Karrerulina conversa (Grzybowski, 1901), PC060615 (6), PC018 (7), PC11 (8), PC060615 (9) and PCs0 (10). 11, Karrerulina horrida (Mjatliuk, 1970), PC060617. 12, Remesella varians (Glaessner, 1937), PC060601. 13, Gaudryina sp., PC1. 14, Eggerella compressa (Andreae, 1884), PC13. 15, Eggerella sp. 1, PC3. 16, Eggerella sp. 2, PC3. 17, Arenobulimina sp., PC060602. 18, Siphotextularia sp. 1, PC060621. 19, Siphotextularia sp. 2, PC060621. 20, Tetraxiella subtilissima PCs0. 21, Gravellina sp., PC060618. 22, Valvulina flexilis Cushman and Renz, 1941, PC060604. 23, Valvulina sp., PC060621. Scale bars equal 0.5 mm.