Spirillina

Mamo, Briony L., 2016, Benthic Foraminifera from the Capricorn Group, Great Barrier Reef, Australia, Zootaxa 4215 (1), pp. 1-123 : 70-71

Spirillina sp. 1 ( Fig. 17 :1, 2)

Remarks. This indeterminate species is assigned to Spirillina due to its planispirally enrolled, completely evolute test, rounded periphery and depressed sutures. This taxon also has shallow radiating corrugations, a long, thin and simple terminal aperture and a slight indent in the final coil of the test on the opposite side to the aperture ( Fig. 17 :1, 2). These features are very similar to Spirillina vivipara Ehrenberg 1843 , Spirillina sp. 1 described by Parker (2009) and Spirillina sp. A ( Hottinger et al. 1993). However, only a single fragmentary specimen was collected preventing detailed comparisons and a confident species identification from being made.

Distribution within study area. Sprillina sp. 1 was only found at site 51 in One Tree Lagoon 2.

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.