Siphoniferoides Saidova 1981

Mamo, Briony L., 2016, Benthic Foraminifera from the Capricorn Group, Great Barrier Reef, Australia, Zootaxa 4215 (1), pp. 1-123 : 17

Siphoniferoides Saidova 1981

Siphoniferoides siphonifera ( Brady 1881) ( Fig. 4 :4, 5)

1881 Textularia siphonifera Brady , p. 53, pl. 42, figs 25–29.

1884 Gaudryina (Siphogaudryina) siphonifera (Brady) (in Barker, 1960) , p. 86, pl. 42, figs 25–29. 1924 Textularia siphonifera Brady ; Cushman, p. 13, pl. 4, figs 4, 5.

1987 Siphoniferoides siphoniferus (Brady) ; Loeblich & Tappan, p. 180, pl. 198, figs 5–9. 1995 Gaudryina siphonifera (Brady) ; Yassini & Jones, p. 73, figs 114, 115.

2008 Siphoniferoids siphoniferus (Brady) ; Strotz, p. 139, 187, 208 fig. 3aa, pl. 1, figs 31, 32. 2009 Siphoniferoides siphoniferus (Brady) ; Parker, p. 39, fig. 32a–h.

2012 Siphoniferoides siphoniferus (Brady) ; Debenay, p. 93, pl. 2.

Description. See Brady (1881; p. 53, pl. 42, figs 25–29), Cushman (1924; p. 13, pl. 4, figs 4, 5) and Parker (2009; p. 39, Fig. 32a–h).

Remarks. Specimens were attributed to this species based on the free, subcylindrical tapering test and numerous distinctly large, fistulose chambers arranged in rows (~6–8) that run longitudinally along the length of the test. Initial chamber arrangement is triserial becoming biserial with round, open fistulae ( Fig. 4 :4).

Some descriptions of this taxon report distinct, but enclosed fistulae ( Brady 1881; Cushman 1924; Loeblich & Tappan 1985), however it is more common to find the test with open fistulae and external apertures. All specimens retrieved from the study area possessed open, short fistulae.

Siphoniferoides siphonifera ( Brady 1881) distribution is largely from the Indo-Pacific region (Admiralty Islands, Sandwich Islands, Hawaii from 29–72 m—Brady 1884; Blake Reef, Southern Japan, Philippines— Cushman 1924; Sahul Shelf, Timor Sea—Lobelich & Tappan 1985; in open estuaries and inner shelf sediments from Bass Strait—Yassini & Jones, 1995; muddy lagoons of Papua New Guinea—Strotz 2008; Ningaloo Reef, Western Australia—Parker 2009; southwestern lagoon of New Caledonia from 45–590 m—Debenay 2012).

Distribution within study area. Siphoniferoides siphonifera was collected from all reefs except for Sykes Reef. It is interesting to note, that like Textularia jparkeri n. sp., S. siphonifera was on average only found in small numbers of between one to three specimens, but at site 50 in One Tree Lagoon 2 and the channel sample between Wistari and Heron Reefs, specimen numbers are four times this average. Previously reported depths plus those reported here support the idea that S. siphonifera prefers tropical habitats below 10 m depth.

Figures

FIGURE 4. (Unless otherwise specified all scale bars = 100 µm). 1 – 3. Rudigaudryina minor (Chapman, 1902), 1. QM # G 465826 from OTI 39, side view. Scale bar = 500 µm. 2 – 3. QM # G 465830 from OTI 39 lateral view (2) and oral view (3). Scale bar for 2 = 200 µm. 4 – 5. Siphoniferoides siphonifera (Brady, 1881), QM # G 465792 from T 2 – 1. 4. Lateral view, scale bar = 200 µm. 5. Oral view. 6 – 7. Sahulia barkeri (Hofker, 1978), QM # G 465827 from OTI 39. 6. Aboral view. 7. Lateral view. 8 – 13. Textularia agglutinans d’Orbigny, 1839. 8 – 9. QM # G 465957 from OTI 43 lateral (8) and oral (9) views. Scale bar for 8 = 50 µm. Scale bar for 9 = 20 µm. 10 – 11. QM # G 465959 from OTI 50 lateral (10) and oral (11) views. Scale bar for 10 = 200 µm. 12 – 13. QM # G 465903 from ST / HW 10 lateral (12) and oral (13) views. 14 – 16. Textularia candeiana d’Orbigny, 1839, QM # G 465966 from CHANNEL. 14 Lateral view. 15. Peripheral view, scale bar = 200 µm. 16. Oral view. 17 – 20. Textularia jparkeri n. sp. 17 – 18. QM # G 465953 from CHANNEL. 17. Lateral view, scale bar = 500 µm. 18. Oral view, scale bar = 200 µm. 19 – 20. QM # G 466055 from CHANNEL, lateral (19) and oral (20) views. Scale bars = 200 µm.