Paratrochamminoides mitratus ( Grzybowski, 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 : 32

Paratrochamminoides mitratus ( Grzybowski, 1901)

Figure 16.19

1901 Trochammina mitrata ; Grzybowski, p. 280, pl. 8, fig. 3.

2005 Paratrochamminoides mitratus (Grzybowski) ; Kaminski and Gradstein, p. 302, pl. 63, figs. 1- 7.

Material. Four specimens from four samples.

Description. Test large, streptospirally coiled, composed of several chambers increasing slowly in size. The coiling plane abruptly changes. Wall finely agglutinated.

Distribution. Turonian–Oligocene ( Kaminski and Gradstein, 2005).

Figures

FIGURE 16. Scanning electron micrographs of Reophacidae (1-3), Hormosinidae (4-13), and Lituotubidae (14-20) from the Caltavuturo Formation cropping out at Portella Colla. 1, Reophax duplex Grzybowski, 1896, PC060624. 2, Reophax pilulifer Brady, 1884, PC13. 3, Reophax sp. 1, PC060615. 4-5, Hormosina velascoensis (Cushman, 1926), PC060617 (4) and PC11 (5). 6, Hormosina trinitatensis Cushman and Renz, 1946, PC11. 7, Hormosina sp. 1, PC060624. 8, Hormosina sp. 2, PC060615. 9-11, Pseudonodosinella elongata Grzybowski, 1898, PC11 (9), PC060601 (10) and PCs0 (11). 12-13, Pseudonodosinella nodulosa Brady, 1879, PC11 (12) and PC060617 (13). 14, Paratrochamminoides acervulatus (Grzybowski, 1896), PC13. 15, Paratrochamminoides deflexiformis (Noth, 1912), PC060615. 16, Lituotuba lituiformis (Brady, 1879), PC060615. 17, Paratrochamminoides sp. 1, PC060601. 18, Paratrochamminoides draco (Grzybowski, 1901), PC11. 19, Paratrochamminoides mitratus (Grzybowski, 1901), PCs0. 20, Conglophragmium deforme (Grzybowski, 1898), PC060623. Scale bar equals 0.5 mm.