Hyalinea balthica (Schröter)

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 : 103

Hyalinea balthica (Schröter)

Figures 30.18-30.21

1782 ‘Ammonshörner der Ostsee’ Schröter, p. 120.

1783 ‘Das platte Ammonshorn aus der Ostsee’ Schröter, p. 20, pl. 1, fig. 2.

1791 Nautilus balthicus Gmelin , p. 3370.

1941 Operculina ammonoides (Gronovius) — LeRoy (Part 2), p. 78, pl. 6, figs. 24, 25 (non Nautilus ammonoides Gronovius, 1781 ).

1964 Hyalinea balthica (Schröter) — LeRoy, p. F44, pl. 9, figs. 34—36.

1966 Hyalinea balthica (Gmelin) — Belford, pp. 124, 125, pl. 14, figs. 1—8, text-figs. 13- 1—13-3.

1977 Hyalinea florenceae McCulloch , p. 452, pl. 181, fig. 1.

1986 Hyalinea balthica (Schroeter) — Wang and Lutze, p. 57, pl. 3, figs. 1, 11, 12,

1987 Hyalinea balthica (Schröter) — Loeblich and Tappan, pl. 632, figs. 5—8.

1988 Hyalinea balthica (Schroeter) — Wang, Zhang, Zhao, Min, Bian, Zheng, Cheng, and Chen, p. 164, pl. 26, figs. 4, 5; Marle, p. 145, pl. 2, fig. 21.

1989 Hyalinea balthica (Schröter) — Ōki, p. 139, pl. 17, fig. 6.

1989 Hyalinea balthica (Schroeter) — Inoue, pl. 28, fig. 9, pl. 31, fig. 12.

1990 Hyalinea balthica (Schröter) — Akimoto, p. 202, pl. 20, fig. 5.

1994 Hyalinea balthica (Schroeter) — Jones, p. 110, pl. 112, figs. 1, 2.

1994 Hyalinea florenceae McCulloch — Loeblich and Tappan, pp. 148, 149, pl. 313, figs. 1—10.

1995 Hyalinea balthica (Schröter) — Ujiié, p. 68, pl. 10, figs. 4, 5.

2001 Hyalinea balthica (Schröter) — Kawagata, pp. 98, 99, fig. 11-8.

2002 Hyalinea balthica (Schröter) — Akimoto, Matsui, Shimokawa, and Furukawa, p. 20, pl. 52, fig. 1.

Remarks. Gmelin (1791) erected this species on the basis of a description by Schröter (1782, 1783)

(see also Belford, 1966). Loeblich and Tappan

(1994) regarded Hyalinea florenceae McCulloch as a distinct species, but we regard it here as a variety of H. balthica with inflated chambers, following the study by Wang and Lutze (1986). In specimens of inflated variation, limbation of sutures that characterize typical H. balthica is no longer visible from the outside.

Hyalinea inflata Ujiié and Kusukawa (1969 , p.

767, pl. 2, figs. 1—3) has inflated chambers similar to H. florenceae , but chamber inflation begins from a younger stage as based on a figure in Oki (1989,

pl. 18, fig. 1); we regard it as a distinct species.

Occurrence. Common in all the formations of the present study. Specimens of inflated variation are sporadic in the Onogoshi and Minebari formations.

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.