Pleurostomella alternans Schwager, 1866
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 |
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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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