Globocassidulina decorata (Sidebottom)

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 : 75

Globocassidulina decorata (Sidebottom)

Figures 23.21, 23.22

1910 Cassidulina decorata Sidebottom , p. 107, pl. 4, fig. 2.

1983 Globocassidulina decorata (Sidebottom) — Nomura (a), pl. 17, fig. 8; Nomura (b), pp. 27, 28, pl. 2, figs. 14—16.

1994 Globocassidulina decorata (Sidebottom) — Loeblich and Tappan, p. 115, pl. 222, figs. 14—19.

1995 Globocassidulina decorata (Sidebottom) — Hasegawa and Nomura, pp. 98, 100, fig. 4-3.

Remarks. This species is distinguished from congeners in its reticulate ornament on the test surface, but this is occasionally difficult to discern in abraded or partially dissolved specimens.

Occurrence. Sporadic in the Yonahama Formation.

Figures

FIGURE 23. Family Bolivinidae, Bolivinitidae, and Cassidulinidae. All scale bars = 0.1mm. 1, 2. Latibolivina subreticulata (Parr), 1: MPC-26346 from sample 2 (Minebari Formation, PL5); 2: MPC-26347 from sample 5-2 (Minebari F., PL5). 3, 4. Abditodentrix pseudothalmanni (Boltovskoy and Guissani de Kahn), 3: MPC-26105 from sample 7 (Yonahama F., PL4); 4: MPC-26106 from sample 15 (Yonahama F., PL3). 5, 6. Bolivinita quadrilatera (Schwager), 5: MPC- 26166 from sample 5-2 (Minebari F., PL5); 6: MPC-26167 from sample MK02B (Minebari F., PL5). 7, 8. Cassidulina carinata Silvestri, 7: MPC-26189 from sample MK01 (Yonahama F., PL2); 8: MPC-26190 from sample MK02B (Minebari F., PL5). 9. Cassidulina cf. laevigata d'Orbigny, MPC-26191 from sample 2-2 (Minebari F., PL5). 10, 11. Cassidulina reniforme NØrvang, 10: MPC-26192 from sample 1 (Minebari F., PL5); 11: MPC-26193 from sample 11 (Onogoshi F.,?PL1). 12, 13. Evolvocassidulina belfordi Nomura, 12: MPC-26249 from sample 14-2 (Yonahama F., PL4); 13: MPC-26250 from sample MK02B (Minebari F., PL5). 14. Evolvocassidulina bradyi (Norman), MPC-26251 from sample 1 (Minebari F., PL5). 15, 16. Evolvocassidulina brevis (Aoki), 15: MPC-26252 from sample 5 (Minebari F., PL5); 16: MPC-26253 from sample 5-2 (Minebari F., PL5). 17, 18. Globocassidulina bisecta Nomura, 17: MPC- 26284 from sample 1 (Minebari F., PL5); 18: MPC-26285 from sample 11 (Onogoshi F.,?PL1). 19, 20. Globocassidulina crassa (d'Orbigny), 19: MPC-26286 from sample MK01 (Yonahama F., PL2); 20: MPC-26287 from sample MK02B (Minebari F., PL5). 21, 22. Globocassidulina decorata (Sidebottom), 21: MPC-26288 from sample 8-2 (Yonahama F., PL4); 22: MPC-26289 from sample 14 (Yonahama F., PL4).