Bdelloidina

Mamo, Briony L., 2016, Benthic Foraminifera from the Capricorn Group, Great Barrier Reef, Australia, Zootaxa 4215 (1), pp. 1-123 : 15-16

Bdelloidina sp. cf. B. aggregata Carter 1877 ( Fig. 3 :15, 16)

Description. See Carter (1877, p. 201, pl. 13 figs 1–8).

Remarks. Bdelloidina aggregata Carter 1877 is characterised by having an attached test with numerous, very broad but low uniserial chambers and an agglutinated test. The chambers are generally slightly curved and follow the irregularities of the surface to which they’re attached. The aperture is not visible but this is due to the fact that this species possesses a row of apertural pores along the apertural face that lie directly against the attachment surface ( Fig. 3 :15, 16) ( Carter 1877; Loeblich & Tappan 1987). The tentative assignment is due to the low abundance and because the specimen does not traverse the attachment surface as extensively as elsewhere. The single specimen may also be a juvenile example.

Distribution within study area. One specimen was collected from site 2 of Transect 1 on Heron Reef flat.

Figures

FIGURE 3. (Unless otherwise specified all scale bars = 100 µm). 1 – 3. Reophax nana Rhumbler, 1911, QM # G 465920 from WL 7. 1. Lateral view, scale bar = 200 µm. 2. Oblique oral view, scale bar = 200 µm. 3. Close-up oral view, scale bar = 20 µm. 4. Ammobaculites sp. 1, QM # G 465924 from WL 15. Lateral view. 5 – 12. Rotaliammina chitinosa (Collins, 1958). 5 – 6. QM # G 466031 from T 2 – 5, spiral (5) and close-up spiral (6) views. Scale bar for 5 = 1 mm. 7 – 8. QM # G 465776 from ST / HW 2, spiral (7) and close-up spiral (8) views. Scale bar for 7 = 500 µm. 9 – 10. QM # G 466022 from T 1 – 4 spiral (9) and close-up spiral (10) views. Scale bar for 9 = 500 µm. 11. QM # G 465940 from OTI 20, spiral view. 12. QM # G 466054 from CHANNEL, umbilical view. Scale bar = 50 µm. 13 – 14. Trochammina cf. T. subconica (Parr, 1950), QM # G 465937 from OTI 50. 13. Lateral view. 14. Oral view. 15 – 16. Bdelloindina cf. B. aggregata Carter, 1877, QM # G 466025 from T 1 – 2. 15. Lateral view, scale bar = 200 µm. 16. Close-up lateral view, scale bar = 50 µm. 17. Haddonia torresiensis Chapman, 1898, QM # G 465906 from ST / HW 2, lateral view. Scale bar = 500 µm. 18 – 20. Rudigaudryina minor (Chapman, 1902). 18. QM # G 465960 from OTI 50, lateral view. Scale bar = 500 µm. 19. QM # G 465891 from ST / HW 8, lateral view. Scale bar = 500 µm. 20. QM # G 465826 from OTI 39, lateral view. Scale bar = 500 µm.