Dyocibicides biserialis Cushman and Valentine

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 : 106

Dyocibicides biserialis Cushman and Valentine

Figures 31.10, 31.11

1930 Dyocibicides biserialis Cushman and Valentine , p. 31, pl. 10, figs. 1, 2.

1977 Dyocibicides cf. biserialis Cushman and Valentine — McCulloch, pp. 464, 465, pl. 194, fig. 5, pl. 195, figs. 1, 3, 4—10, 14, 15, pl. 196, figs. 1, 2.

1987 Dyocibicides biserialis Cushman and Valentine — Loeblich and Tappan, pl. 639, figs. 8—10.

1994 Dyocibicides biserialis Cushman and Valentine — Jones, p. 97, pl. 93, fig. 6.

2002 Dyocibicides biserialis Cushman and Valentine — Akimoto, Matsui, Shimokawa, and Furukawa, p. 21, pl. 54, fig. 2.

Occurrence. Sporadic in the Onogoshi and Minebari formations.

Figures

FIGURE 31. Family Planulinidae, Cibicididae, Epistomariidae, Amphisteginidae, and Nonionidae. All scale bars = 0.1mm. 1, 2. Planulina retia Belford, 1: MPC-26416 from sample 2 (Minebari Formation, PL5); 2: MPC-26417 from sample 5-2 (Minebari F., PL5). 3, 4. Cibicides refulgens de Montfort, 3: MPC-26197 from sample 2-2 (Minebari F., PL5); 4: MPC-26198 from sample 14-2 (Yonahama F., PL4). 5. Cibicides tenuimargo (Brady), MPC-26199 from sample 4-2 (Minebari F., PL5); stripe pattern on the dorsal side implies attached material. 6, 7. Fontbotia wuellerstorfi (Schwager), 6: MPC-26272 from sample MK01 (Yonahama F., PL2); 7: MPC-26273 from sample MK02A (Minebari F.,PL5).8, 9. Lobatula lobatula (Walker and Jacob), 8: MPC-26367 from sample 5 (Minebari F., PL5); 9: MPC-26368 from sample 5-2 (Minebari F., PL5). 10, 11. Dyocibicides biserialis Cushman and Valentine, 10: MPC-26224 from sample 2-2 (Minebari F., PL5); 11: MPC-26225 from sample 3-2-up-sand (Onogoshi F., PL1). 12—14. Pseudoeponides japonicus Uchio, 12: MPC-26430 from sample 14 (Yonahama F., PL4); 13: MPC-26431 and 14: MPC-26548 from sample MK02B (Minebari F., PL5); arrows in 14 shows slit opening along dorsal sutures. 15, 16. Amphistegina lessonii d'Orbigny, 15: MPC-26123 from sample 2 (Minebari F., PL5); 16: MPC-26124 from sample 2-2 (Minebari F., PL5); all specimens of this study are juveniles. 17, 18. Nonion japonicum Asano, 17: MPC-26392 from sample 5-2 (Minebari F., PL5); 18: MPC-26393 from sample 11 (Onogoshi F.,?PL1). 19, 20. Nonionellina labradorica (Dawson), 19: MPC-26394 from sample 1-2 (Minebari F., PL5); 20: MPC-26395 from sample MK02B (Minebari F., PL5). 21, 22. Pseudononion cuevasensis Saunder and Müller-Merz, 21: MPC-26438 from sample 10 (Onogoshi F., PL2); 22: MPC-26439 from sample MK02B (Minebari F., PL5). 23, 24. Pseudononion subcostatum Fujita and Ito, 23: MPC- 26440 from sample 14-2 (Yonahama F., PL4); 24: MPC-26441 from sample MK02B (Minebari F., PL5).