Pleurostomella alternans Schwager, 1866

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 : 91

publication ID

https://doi.org/ 10.26879/444

persistent identifier

https://treatment.plazi.org/id/A029445F-E97D-FFD8-488B-BE7676F3A273

treatment provided by

Felipe

scientific name

Pleurostomella alternans Schwager
status

 

Pleurostomella alternans Schwager

Figures 27.26-27.28 View FIGURE 27

1866 Pleurostomella alternans Schwager , p. 238, fig. 79.

1911 Pleurostomella alternans Schwager — Cushman, p. 50, fig. 81.

1941 Pleurostomella alternans Schwager — LeRoy (Part 1), p. 38, pl. 3, figs. 54, 55; LeRoy (Part 2), p. 82, pl. 2, figs. 12, 13.

1964 Pleurostomella alternans Schwager — LeRoy, p. F36, pl. 5, fig. 5.

1968 Pleurostomella alternans Schwager — Huang, p. 59, pl. 12, fig. 4.

1994 Pleurostomella alternans Schwager — Loeblich and Tappan, p. 133, pl. 261, figs. 13, 14.

1998 Pleurostomella alternans Schwager — Hess, p. 86, pl. 11, fig. 10.

2002 Pleurostomella alternans Schwager — Hayward, p. 302, pl. 2, figs. 22—24.

2012 Pleurostomella alternans Schwager — Hayward, Kawagata, Sabaa, Grenfell, Kerckhoven, Johnson, and Thomas, p. 228, pl. 36, figs. 10—15.

Remarks. Small form (up to 0.5 mm in length) and large forms (ca. 1.1 mm) are distinguished in samples from the Yonahama Formation. This gap in test size is large; forms might be distinguished as separate species.

Occurrence. Rare in the Yonahama and Minebari formations.

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