Elphidium aff. neosimplex McCulloch, 1977

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 : 123

Elphidium aff. neosimplex McCulloch

Figures 36.13, 36.14

Compared with:

1977 Elphidium neosimplex McCulloch , p. 233, pl. 97, fig. 9.

1994 Elphidium neosimplex McCulloch — Loeblich and Tappan, p. 169, pl. 381, figs. 6— 11.

Remarks. The present form closely resembles E.

neosimplex in the lenticular morphology and pitted retral process, yet it is distinguished by its large test size, numerous chambers, and non-depressed umbilicus.

Occurrence. Rare in the Oura and Onogoshi formations.

Figures

FIGURE 36. Family Rotaliidae and Elphidiidae. All scale bars = 0.1mm, unless otherwise indicated. 1, 2. Rotalinoides gaimardii (Fornasini), 1: MPC-26468 from sample 3-2-up-sand (Onogoshi Formation, PL1); 2: MPC-26469 from sample 18 (Oura F.,?PL1). 3, 4. Cribroelphidium clavatum (Cushman), 3: MPC-26210 from sample 2 (Minebari F., PL5); 4: MPC-26211 from sample MK02B (Minebari F., PL5). 5, 6. Cribroelphidium subincertum (Asano), 5: MPC-26212 from sample 1 (Minebari F., PL5); 6: MPC-26213 from sample 1-2 (Minebari F., PL5). 7, 8. Cribroelphidium sp.A, 7: MPC-26214 from sample 14 (Yonahama F., PL4); 8: MPC-26215 from sample 14-2 (Yonahama F., PL4). 9, 10. Elphidium advenum (Cushman), 9: MPC-26232 from sample 5 (Minebari F., PL5); 10: MPC-26233 from sample MK02A (Minebari F., PL5). 11, 12. Elphidium crispum (Linnaeus), 11: MPC-26234 from sample 2 (Minebari F., PL5); 12: MPC- 26235 from sample 16 (Yonahama F., PL3). 13, 14. Elphidium aff. neosimplex (McCulloch), 13: MPC-26236 from sample 11 (Onogoshi F.,?PL1); 14: MPC-26237 from sample 18 (Oura F.,?PL1). 15. Elphidium planulatum (Lamarck), MPC-26238 from sample 5-2 (Minebari F., PL5); broken specimen.