Procerolagena gracilis (Williamson, 1848)

Symphonia, Tabita K. & Senthil, Nathan D., 2019, Taxonomic notes on Recent Foraminifera from the Continental Shelf-Slope Region of Southwestern Bay of Bengal, East Coast of India, Palaeontologia Electronica (55 A) 22 (3), pp. 1-89 : 13

Procerolagena gracilis (Williamson, 1848)

Figure 2.22

1848 Lagena gracilis Williamson , p. 13, pl. 1, fig. 5.

2008 Procerolagena gracilis (Williamson) ; Riveiros and Patterson, p. 16, fig. 6.7.

2015 Procerolagena gracilis (Williamson) ; Hanagata and Nobuhara, p. 37, fig. 13.12.

Description. Test slightly elongate, unilocular with a distinct basal spine, wall calcareous, finely perforate, surface ornamented with long striae extending only up to half of the neck; aperture terminal, at the end of the neck, bordered by a phialine lip.

Figures

FIGURE 2. 1-3, Amphicoryna scalaris (Batsch, 1791) in dorsal view (scale equals 200 μm) (1); in apertural view (scale equals 100 μm) (2); and macrospheric form in dorsal view (scale equals 300 μm) (3). 4, Lenticulina cultrata (de Montfort, 1808) in dorsal view (scale equals 500 μm). 5, Lenticulina gibba (d’Orbigny, 1826) in dorsal view (scale equals 500 μm). 6-7, Lenticulina orbicularis (d’Orbigny, 1826) in dorsal view (scale equals 300 μm) (6) and in apertural view (scale equals 300 μm) (7). 8-9, Lenticulina suborbicularis Parr, 1950 in dorsal view (scale equals 100 μm) (8) and in apertural view (scale equals 100 μm) (9). 10, Marginulinopsis costata (Batsch, 1791) in dorsal view (scale equals 1 mm). 11, Dentalina ittai Loeblich and Tappan, 1953 in dorsal view (scale equals 200 μm). 12, Pyramidulina catesbyi (d’Orbigny, 1839) in dorsal view (scale equals 200 μm). 13-14, Pseudolingulina bradii (Silvestri, 1903) in dorsal view (scale equals 400 μm) (13) and in apertural view (scale equals 100 μm) (14). 15, Lagena aspera Reuss, 1861 in dorsal view (scale equals 300 μm). 16, Lagena perlucida (Montagu, 1803) in dorsal view (scale equals 300 μm). 17, Lagena semistriata Williamson, 1848 in dorsal view (scale equals 200 μm). 18, Lagena striata (d’Orbigny, 1839) in dorsal view (scale equals 100 μm). 19, Lagena strumosa Reuss, 1858 in dorsal view (scale equals 200 μm). 20, Hyalinonetrion gracillima (Seguenza, 1862) in dorsal view (scale equals 300 μm). 21, Lagena substriata Williamson, 1848 in dorsal view (scale equals 200 μm). 22, Procerolagena gracilis (Williamson, 1848) in dorsal view (scale equals 200 μm). 23, Procerolagena sp. in dorsal view (scale equals 100 μm). 24, Reussoolina laevis (Montagu, 1803) in dorsal view (scale equals 100 μm). 25, Favulina hexagona (Williamson, 1848) in dorsal view (scale equals 50 μm).