Globigerinella siphonifera (d'Orbigny)

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 : 59

Globigerinella siphonifera (d'Orbigny)

Figures 19.14, 19.15

1839 Globigerina siphonifera d’Orbigny (a), p. 83, pl. 4, figs. 15—18.

1879 Globigerina aequilateralis Brady , p. 285.

1941 Globigerinella aequilateralis (Brady) — LeRoy (Part 1), p. 44, pl. 2, figs. 43, 44.

1944 Globigerinella aequilateralis (Brady) — LeRoy (Part 1), pp. 40, 41, pl. 3, figs. 24, 25, pl. 6, figs. 37, 38; LeRoy (Part 2), p. 91, pl. 4, figs. 13, 14.

1959 Globigerinella aequilateralis (Brady) — Bradshow, p. 38, pl. 7, figs. 1, 2; Graham and Militante, p. 111, pl. 18, fig. 11.

1959 Globigerinella aequilateralis involute (Cushman) — Blow, pp. 171, 172, pl. 8, fig. 32.

1962 Globigerinella siphonifera (d’Orbigny) — Parker, p. 228, pl. 2, figs. 22—28.

1962 Globigerinella aequilateralis aequilateralis (Brady) — Belford, p. 21, pl. 5, figs. 15— 18.

1964 Globigerinella aequilateralis (Brady) — LeRoy, p. F42, pl. 14, figs. 19, 20.

1965 Globigerinella aequilateralis (Brady) — Todd, pp. 64, 65, pl. 25, figs. 4, 5.

1967 Globigerinella siphonifera (d’Orbigny) — Parker, pp. 152, 153, pl. 22, fig. 5.

1968 Globigerinella siphonifera (d’Orbigny) — Huang, p. 60, pl. 11, figs. 16, 17.

1975 Globigerinella siphonifera (d’Orbigny) — Ibaraki and Tsuchi, pl. 4, fig. 15.

1977 Globigerinella aequilateralis (Brady) — Kadar, p. 67, pl. 4, fig. 26.

1978 Globigerinella aequilateralis (Brady) — Oda, p. 52, pl. 2, figs. 8, 9.

1981 Globigerinella aequilateralis (Brady) — Saito, Thompson, and Breger, pp. 26, 28, pl. 2, fig. 2.

1985 Globigerinella siphonifera (d’Orbigny) — Ibaraki, p. 121, pl. 6, fig. 3.

1985 Globigerinella aequilateralis (Brady) — Ujiié, pl. 17, figs. 7, 8.

1985 Hastigerina siphonifera (d’Orbigny) — Bolli and Saunders, pp. 251, 253, figs. 42.1— 42.4, 43.1, 43.2.

1988 Globigerinella aequilateralis (Brady) — Wang, Zhang, Zhao, Min, Bian, Zheng, Cheng, and Chen, p. 39, pl. 5, figs. 3, 4.

1994 Globigerinella siphonifera (d’Orbigny) — Loeblich and Tappan, p. 106, pl. 200, figs. 7—10, pl. 201, figs. 1—3.

2004 Globigerinella siphonifera (d’Orbigny) — Hanagata, pl. 4, fig. 7.

Remarks. We include the morphotype of G. aequilateralis in the present species, although these forms have been differentiated in numerous previous reports.

Occurrence. Rare in the Onogoshi Formation,

common in the Yonahama and Minebari formations.

Figures

FIGURE 19. Family Globigerinidae. All scale bars = 0.1mm. 1, 2. Globigerina falconensis Blow, 1: MPC-25938 from sample 1 (Minebari Formation, PL5); 2: MPC-25939 from sample MK02B (Minebari F., PL5). 3—6. Globigerina foliata Bolli, 3: MPC-25940 from sample MK01 (Yonahama F., PL2); 4: MPC-25941 from sample MK02B (Minebari F., PL5); 5: MPC-25942 from sample 14 (Yonahama F., PL4); 6: MPC-25943 from sample 16 (Yonahama F., PL3). Specimens of 5 and 6 are morphotype distinguished by Ujiié (1985) as G.foliata var.A. 7, 8. Globigerina bulbosa LeRoy, 7: MPC- 25934 from sample 4 (Minebari F., PL5); 8: MPC-25935 from sample 7 (Yonahama F., PL4). 9—11. Globigerinella praecalida Blow, 9: MPC-25944 from sample 4 (Minebari F., PL5); 10: MPC-25945 from sample 8-2 (Yonahama F., PL4); 11: MPC-26544 from sample MK01 (Yonahama F., PL2). Last chamber of specimen of 11 lacks last chamber. 12, 13. Globigerinella pseudobesa (Salvatorini), 12: MPC-25941 from sample 5 (Minebari F., PL5); 13: MPC-25947 from sample 11 (Onogoshi F.,?PL1). Specimen of 13 shows a young stage of the species. 14, 15. Globigerinella siphonifera (d'Orbigny), 14: MPC-25948 from sample 1 (Minebari F., PL5); 15: MPC-25949 from sample 13 (Minebari F., PL5).