Eilohedra rotunda (Husezima and Maruhasi)

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 : 102

Eilohedra rotunda (Husezima and Maruhasi)

Figures 30.11, 30.12

1944 Eponides rotundus Husezima and Maruhasi , p. 399, pl. 34, fig. 12.

1958 Epistominella levicula Resig , p. 304, text-fig. 16.

1967 Epistominella nipponica Kuwano , in Matoba, text-fig. 8, pl. 26, fig. 13.

1988 Epistominella naraensis (Kuwano) — Wang, Zhang, Zhao, Min, Bian, Zheng, Cheng, and Chen, p. 156, pl. 22, fig. 13 (non Pseudoparrella naraensis Kuwano, 1950 ).

1989 Eilohedra levicula (Resig) — Ōki, pp. 126, 172, pl. 14, fig. 2.

1994 Epistominella levicula Resig — Xu and Ujiié, p. 518, fig. 7-3.

1995 Eilohedra levicula (Resig) — Ujiié, p. 67, pl. 10, fig. 2.

Remarks. This very small species has priority over

E. levicula and E. nipponica . Type specimens of this species were lost in World War II; a neotype has not yet been designated. This is a familiar species in the Sea of Japan region, meaning that the selection of a neotype would not be difficult. It also differs from Pseudoparrella naraensis Kuwano in a strongly curved suture on the umbilical side .

Occurrence. Rare in the Yonahama Formation,

common in the Minebari Formation.

Figures

FIGURE 30. Family Parrelloididae, Pseudoparrellidae, Discorbinellidae, and Planulinidae. All scale bars = 0.1mm. 1—4. Cibicidoides pachyderma (Rzehak), 1: MPC-26203 from sample MK01 (Yonahama Formation, PL2); 2: MPC- 26204 from sample 4-2 (Minebari F., PL5); 3: MPC-26205 from sample 3-2-up-sand (Onogoshi F., PL1); 4: MPC- 26206 from sample 5-2 (Minebari F., PL5); 3 and 4, inflate-chamber variation. 5, 6. Cibicidoides sp.A, 5: MPC-26207, 6: MPC-26208, both from sample MK01 (Yonahama F., PL2). 7, 8. Parrelloides bradyi (Trauth), 7: MPC-26409 from sample 7 (Yonahama F., PL4); 8: MPC-26410 from sample MK01 (Yonahama F., PL2). 9, 10. Alabaminoides exiguus (Brady), 9: MPC-26108 from sample MK01 (Yonahama F., PL2); 10: MPC-26109 from sample MK02A (Minebari F., PL5). 11, 12. Eilohedra rotunda (Husezima and Maruhasi), 11: MPC-26230 from sample 1-2 (Minebari F., PL5); 12: MPC-26231 from sample MK02B (Minebari F., PL5). 13, 14. Facetocochlea pulchra (Cushman), 13: MPC-26255 from sample 3-2-low-silt (Onogoshi F., PL1); 14: MPC-26256 from sample 5-2 (Minebari F., PL5). 15. Discorbinella montereyensis Cushman and Martin, MPC-26223 from sample 12 (Minebari F., PL5). 16, 17. Laticarinina pauperata (Parker and Jones), 16: MPC-26348 from sample 7 (Yonahama F., PL4); 17: MPC-26349 from sample MK01 (Yonahama F., PL2). 18—21. Hyalinea balthica (Schröter), 18: MPC-26328 from sample MK01 (Yonahama F., PL2); 19: MPC-26329 from sample MK02B (Minebari F., PL5); 20: MPC-26330 from sample 5 (Minebari F., PL5); 21: MPC- 26331 from sample 5-2 (Minebari F., PL5); 20 and 21, inflated-chamber variation.