Marginotruncana sigali Reichel 1950 from: Caron, M. (1985): Cretaceous planktic foraminifera. In: Plankton stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 17–86 . |
Notice: This catalogue page may contain unedited data.
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Species Marginotruncana sigali Reichel 1950 |
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Discussion / Comments: |
Caron (1985):
Like M. renzi, M. schneegansi and M. sinuosa, M. sigali has a biconvex test but differs from these in its roughly pustulose keels merging into a single one in the last whorl. As is the case in all Marginotruncana species, the double keel on the early whorls remains visible in thin section. |
Systematics: |
5 Classis Foraminifera
Familia Globotruncanidae
Genus Helvetoglobotruncana
Species Helvetoglobotruncana praehelvetica
Species Marginotruncana sigali
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Synonym list: |
Caron (1985):
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References: |
Reichel,M. (1950): Observations sur les Globotruncana du grisement de la Breggia (Tessin) . Ecoglae geologicae Helvetiae Vol. 42 p. 596-617
Caron,M. (1985): Cretaceous planktic foraminifera. In: Plankton stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 17–86
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