Murrayinella globosa (Millett)

Hanagata, S & Nobuhara, T, 2015, Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph, Palaeontologia Electronica (Cambridge, England) 33 (8), pp. 1-142 : 98-99

Murrayinella globosa (Millett)

Figures 29.17, 29.18

1903 Discorbina imperatorial (d’Orbigny) var. globosa Millett (part VII), p. 701, pl. 7, fig. 6.

1988 Schackoinella globosa (Millett) — Wang, Zhang, Zhao, Min, Bian, Zheng, Cheng, and Chen, p. 158, pl. 23, figs. 15, 16.

1989 Pararotalia aff. globosa (Millett) — Ōki, p. 133, pl. 15, fig. 9.

1994 Schackoinella globosa (Millett) — Loeblich and Tappan, p. 142, pl. 294, figs. 1— 10.

2000 Murrayinella globosa (Millett) — Nomura and Takayanagi, pp. 174, 175, figs. 1.1— 1.8.

Remarks. Specimens from Miyakojima Island have four to four and a half chambers in the final whorl rather than five in the typical form of this species.

The present study regards it to fall within the range of variation.

Occurrence. Rare in the Yonahama and Minebari formations.

Figures

FIGURE 29. Family Discorbidae, Rosalinidae, Sphaeroidinidae, Glabratellidae, Siphonidae, and Parrelloididae. All scale bars = 0.1mm. 1, 2. Rotorbis auberi (d'Orbigny), 1: MPC-26470 from sample 4 (Minebari Formation, PL5); 2: MPC-26471 from sample 12 (Minebari F., PL5). 3, 4. Neoeponides bradyi Le Calvez, 3: MPC-26387 from sample 2-2 (Minebari F., PL5); 4: MPC-26388 from sample 6-2 (Yonahama F., PL2). 5. Strebloides advenus (Cushman), MPC- 26512 from sample 8-2 (Yonahama F., PL4). 6, 7. Gavelinopsis lobatulus (Parr), 6: MPC-26275 from sample 15 (Yonahama F., PL3); 7: MPC-26276 from sample MK01 (Yonahama F., PL2). 8, 9. Gavelinopsis praegeri (Heron-Allen and Earland), 8: MPC-26277 from sample 11 (Onogoshi F.,?PL1); 9: MPC-26278 from sample 18 (Oura F.,?PL1). 10, 11. Planodiscorbis rarescens (Brady), 10: MPC-26411 from sample 2 (Minebari F., PL5); 11: MPC-26412 from sample 3-2- up-sand (Onogoshi F., PL1). 12. Rosalina australis (Parr), MPC-26463 from sample MK01 (Yonahama F., PL2). 13, 14. Rosalina globularis d'Orbigny, 13: MPC-26464 from sample 5-2 (Minebari F., PL5); 14: MPC-26465 from sample MK01 (Yonahama F., PL2). 15, 16. Sphaeroidina bulloides d'Orbigny, 15: MPC-26505 from sample 3-2-low-silt (Onogoshi F., PL1); 16: MPC-26506 from sample MK01 (Yonahama F., PL2). 17, 18. Murrayinella globosa (Millett), 17: MPC-26380 from sample 1 (Minebari F., PL5); 18: MPC-26381 from sample 14-2 (Yonahama F., PL4). 19. Planoglabratella opercularis (d'Orbigny), MPC-26413 from sample MK02B (Minebari F., PL5), juvenile specimen. 20, 21. Siphonina australis Cushman, 20: MPC-26493 from sample 15 (Yonahama F., PL3); 21: MPC-26494 from sample MK01 (Yonahama F., PL2). 22—24. Cibicidoides ornatus (Cushman), 22: MPC-26200 from sample 6 (Yonahama F., PL2); 23: MPC-26201 from sample MK01 (Yonahama F., PL2); 24: MPC-26202 from sample 4-2 (Minebari F., PL5).