Pyrgo

Mamo, Briony L., 2016, Benthic Foraminifera from the Capricorn Group, Great Barrier Reef, Australia, Zootaxa 4215 (1), pp. 1-123 : 56

Pyrgo sp. 3 ( Fig. 12 :17)

Description. Test porcellaneous, smooth, lacking ornament. Test rounded with greatly inflated chambers, sutures shallowly depressed. Aperture subterminal, oval with a short, stout tooth that may be bifid.

Remarks. This species resembles Pyrgo sp. 1, but its chambers are more inflated and sutures more depressed. The dentition is also narrower ( Fig. 12 :17). This species resembles Pyrgo anomala ( Schlumberger 1891) in test and aperture shape and inflated chambers. However, damage to the few collected tests precludes a confident species assignment and comparisons.

Distribution within study area. This species was only collected from the channel sample between Heron and Wistari Reefs at a depth of 35 m.

Figures

FIGURE 12. (Unless otherwise specified all scale bars = 100 µm). 1 – 4. Miliolinella sp. 3, QM # G 465973 from OTI 51. 1. Lateral view. 2. Peripheral view, scale bar = 50 µm. 3. Underside view, scale bar = 50 µm. 4. Oral view, scale bar = 50 µm. 5 – 6. Parahauerinoides fragilissima (Brady, 1884), MU 62849 from OTI 47. 5. Lateral view. 6. Peripheral view. 7 – 8. Pseudomassilina australis (Cushman, 1932), MU 62899 from T 2 – 3. 7. Lateral view. 8. Underside view. 9 – 11. Pseudomassilina macilenta (Brady, 1884). 9 – 10. QM # G 465925 from OTI 12, lateral (9) and oral (10) views. 11. QM # G 465947 from WL 15, lateral view. 12 – 13. Pyrgo sp. 1, MU 62903 from CHANNEL. 12. Lateral view. 13. Oral view. 14 – 16. Pyrgo sp. 2, QM # G 465950 from HL 40. 14. Lateral view. 15. Peripheral view. 16. Oral view. 17. Pyrgo sp. 3, QM # G 465956 from CHANNEL, lateral view. 18 – 20. Triloculina barnadi Haig, 1988, QM # G 465791 from ST / HW 2, lateral (18) and oral (19) views. 20. QM # G 465835 from OTI 36, lateral view.