Globigerinoides pyramidalis (Van den Broeck)

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 : 60

Globigerinoides pyramidalis (Van den Broeck)

Figures 20.5, 20.6

1876 Globigerina bulloides d’Orbigny , var. rubra d’Orbigny subvar. pyramidalis Van den Broeck , p. 127, pl. 3, figs. 9, 10.

1941 Globigerinoides rubra (D’Orbigny) — LeRoy (Part 3), p. 118, pl. 3, figs. 4—6.

1962 Globigerinoides ruber (d’Orbigny) — Parker, pp. 230, 232, pl. 3, figs. 12—14, pl. 4, figs. 1—10; Belford, pl. 5, figs. 4—6 (only).

1964 Globigerinoides ruber (d’Orbigny) — LeRoy, p. F42, pl. 14, fig. 14.

1967 Globigerinoides ruber (d’Orbigny) — Parker, p. 156, pl. 22, figs. 1—4.

1981 Globigerinoides pyramidalis (van den Broeck) — Saito, Thompson, and Breger, p. 62, pl. 16, fig. 1.

1985 Globigerinoides pyramidalis (van den Broeck) — Ujiié, p. 110, pl. 6, figs. 2, 3.

1994 Globigerinoides pyramidalis (van den Broeck) — Jones, p. 89, pl. 79, figs. 13—15; Loeblich and Tappan, p. 107, pl. 204, figs. 4—8, pl. 206, figs. 7—9.

2004 Globigerinoides pyramidalis (van den Broeck) — Hanagata, pl. 5, fig. 6.

Remarks. This species has a much higher trochospiral test than G. ruber which many authors have regarded as a synonym.

Occurrence. Rare in the Onogoshi and Yonahama formations, common in the Minebari Formation.

Figures

FIGURE 20. Family Globigerinidae. All scale bars = 0.1mm. 1, 2. Globigerinoides extremus Bolli and Bermúdez, 1: MPC-25955 from sample 14 (Yonahama Formation, PL4); 2: MPC-25956 from sample 15 (Yonahama F., PL3). 3, 4. Globigerinoides obliquus Bolli, 3: MPC-25957 from sample 6 (Yonahama F., PL2); 4: MPC-25958 from sample MK01 (Yonahama F., PL2). 5, 6. Globigerinoides pyramidalis (Van den Broeck), 5: MPC-25959 from sample 1 (Minebari F., PL5); 6: MPC-25960 from sample 2 (Minebari F., PL5). 7—9. Globigerinoides ruber (d'Orbigny), 7: MPC-25961 from sample MK01 (Yonahama F., PL2); 8: MPC-25962 from sample MK02B (Minebari F., PL5); 9: MPC-25963 from sample 1-2 (Minebari F., PL5). Specimen of 9 has aberrant sac-like last chamber. 10—12. Globigerinoides sacculifer (Brady), 10: MPC-25964 and 11: MPC-25965 from sample MK01 (Yonahama F., PL2); 12: MPC-25966 from sample MK02A (Minebari F., PL5). Specimen of 10, young form assignable to G. immatura LeRoy; Specimen of 12 preserves sac-like last chamber.