Velapertina cingulata Popescu 1969 from: Rögl, F. (1985): Late Oligocene and Miocene planktic foraminifera of the Central Paratethys. In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 315-328 . |
Notice: This catalogue page may contain unedited data.
|
Species Velapertina cingulata Popescu 1969 |
|
|
Discussion / Comments: |
Rögl (1985):
We consider all three of Popescu's species (V. cingulata, V. iorgulescui, C. prahovensis) to be variants of a single species and place them here in V. cingulata. The species differs from V. indigena in its larger umbilical primary aperture and in the presence of small bullae covering the secondary sutural apertures. The two taxa have the same stratigraphic range.
Note: The genus Velapertina was described as possessing a trochospiral to globular test with the interiomarginal umbilical aperture covered by a bulla. Secondary sutural apertures are also present and in V. cingulata these may be covered by small bullae. Luczkowska (1971) stated that the occurrence of a bulla covering the aperture is not a constant feature and that only few specimens possess such structures. She therefore did not recognize the genus and referred Globigerinoides indigena Luczkowska to the genus Praeorbulina.
The only distinct feature we regard as typical for Velapertina is the occurrence of sutural openings similar to those in Candeina. Because of the occasional presence of bullae in Velapertina and its coarser pored wall surface, we retain the genus as separate from Candeina, while its lack of an embracing final chamber is the distinction from the stratigraphically older Praeorbulina. Velapertina has so far only been reported from the Late Badenian/Kossovian of the Paratethys, corresponding to the nannofossil Zone NN 7
|
Synonym list: |
Rögl (1985):
|
References: |
Popescu,G. (1969): new Globigerina (Foraminifera) from the Upper Tortonian of the Transylvanian Basin and the Subcarpathians . Rev. Roum. Geol. Geophys. Geogr., ser. Geol. Vol. 13 p. 103-6
Rögl,F. (1985): Late Oligocene and Miocene planktic foraminifera of the Central Paratethys. In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 315-328
|

This work is licensed under a Creative Commons Attribution 2.5 License.
|
|