Cibicidoides ornatus (Cushman)

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 : 99

Cibicidoides ornatus (Cushman)

Figures 29.22-29.24

1921 Truncatulina ungeriana (d’Orbigny) var. ornata Cushman , p. 317, text-fig. 12.

1964 Cibicides ornatus (Cushman) — LeRoy, p. F45, pl. 8, figs. 19—21.

1994 Heterolepa ornatus (Cushman) — Loeblich and Tappan, p. 162, pl. 314, figs. 1—10.

Diagnosis. Moderate–sized species with near-

equally biconvex, numerous chambers about 11-13

in final whorl, coarsely pitted surface.

Occurrence. Sporadic in the Onogoshi, 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).