Guttulina

Mamo, Briony L., 2016, Benthic Foraminifera from the Capricorn Group, Great Barrier Reef, Australia, Zootaxa 4215 (1), pp. 1-123 : 73

Guttulina sp. 1 ( Fig. 17 :8, 9)

Remarks. Specimens were only tentatively assigned to Guttulina due to the heavily damaged state of all specimens leaving distinguishing features incomplete or broken. In spite of this, the oval test with enlongated chambers, inflated aboral end and rounded peripheries ( Fig. 17 :8, 9) suggests an affinity with Guttulina . The test tapers towards the oral end and the terminal aperture consists of slit-like radial openings atop a thickened neck ( Fig. 17 :9). Collected specimens bear a strong resemblance to Glandulina ? sp. cf. G. laevigata of Parker (2009) particularly in regards to the elongate, tapering test shape and radiating, slit-like apertures but lacks a tapered base and uniserial chamber arrangement necessary for Glandulina .

Distribution within study area. Guttulina sp. 1 was collected in low numbers (one to eight speicmens) at sites 52 and 53 in One Tree Lagoon 2 and the channel sample between Wistari and Heron Reefs.

Figures

FIGURE 17. (Unless otherwise specified all scale bars = 100 µm). 1 – 2. Spirillina sp. 1, QM # G 465974 from OTI 51. 1. Side view. 2. Oral view, scale bar = 50 µm. 3 – 5. Seguenzaella lacunata (Burrows & Holland, 1895), QM # G 465949 from OTI 47. Scale bar = 50 µm 3. Lateral view. 4. Peripheral view. 5. Oral view. 6 – 7. Guttulina cf. G. bartschi Cushman & Ozawa, 1930, QM # G 465998 from CHANNEL, Scale bar = 50 µm. 6. Lateral view. 7. Oral views. 8 – 9. Guttulina sp. 1, QM # G 466080 from CHANNEL. 8. Lateral view, scale bar = 200 µm. 9. Oral view. 10 – 11. Sigmoidella elegantissima (Parker & Jones, 1870), QM # G 465875 from CHANNEL. 10. Lateral view. 11. Oral view. 12 – 13. Webbinella? sp. 1, QM # G 465895 from ST 10. 12. Lateral view. 13. Peripheral view. 14 – 15. Fissurina bispinata Ujiié, 1963, QM # G 466136 from OTI 47. Scale bar = 20 µm. 14. Lateral view. 15. Oral view. 16 – 18. Fissurina sp. 1, QM # G 465934 from OTI 8. 16. Peripheral view, scale bar = 50 µm. 17. Oral view, scale bar = 50 µm. 18. Underside view, scale bar = 20 µm. 19 – 20. Saintclaroides marlysae McCulloch, 1981, QM # G 465923 from WL 2. 19. Spiral view. 20. Peripheral view.