Trochammina bifaciata Friedberg, 1901

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 : 43

Trochammina bifaciata Friedberg, 1901

Figure 19.24

1901 Trochammina bifaciata ; Friedberg, p. 460, pl. 2, fig. 1a-b.

Material. One specimen from the sample PC060604.

Description. Test free, compressed, discoidal. Chambers not distinct on the dorsal side, whereas in the ventral side a well developed spire occur. Aperture interiomarginal, wall finely agglutinated with rough surface.

Figures

FIGURE 19. Scanning electron micrographs of Haplophragmoididae (1-6), Sphaeramminidae (7-10), Lituolidae (11- 14), and Recurvoidea (15-25) from the Caltavuturo Formation cropping out at Portella Colla. 1-2, Haplophragmoides cf. latissimusuturalis Smith, 1971, PC3. 3, Haplophragmoides sp. 3, PC060615. 4, Haplophragmoides sp. 4, PC060601. 5, Haplophragmoides sp. 5, PC060615. 6, Haplophragmoides sp. 6, PC060621. 7-8, Praesphaerammina subgaleata (Vašiček, 1947), PC11 (7) and PC1 (8). 9-10, Ammosphaeroidina pseudopauciloculata (Mjatliuk, 1966), PC060604 (9) and PC060604 (10). 11, Ammobaculites agglutinans (d’Orbigny, 1846), PC060615. 12, Ammobaculites sp. 1, PC060607. 13, Ammobaculites sp. 3, PC15. 14, Ammobaculites sp. 2, PC060625. 15-16, Budashevaella multicamerata (Voloshinova and Budasheva, 1961), PC060604. 17, Cribrostomoides subglobosus (Cushman, 1910), PC060604. 18, Recurvoidella lamella (Grzybowski, 1898), PC060601. 19, Recurvoides anormis Mjatliuk, 1970, PC5. 20, Recurvoides sp. 1, PC060601. 21, Recurvoides sp. 2, PC060623. 22, Recurvoides nucleolus (Grzybowski, 1898), MM3. 23, Recurvoides walteri (Grzybowski, 1898), PC5. 24, Trochammina bifaciata Friedberg, 1901, PC060604. 25, Thalmannammina subturbinata (Grzybowski, 1898), MM14. Scale bar equals 0.5 mm.