Taxonomy
Original description: caractérisée par l'ornementation des loges et les sutures du milieu du test légèrement en relief, est un bon repère du sommet de l'étage D, peut-etre est-ce du Coniacien ; nous ne l'avons jamais observée au-dessus des bancs à Inoceramus siccensis.
Entries in the Catalog of original descriptions: Guembelina deflaensis, Guembelina conjakica, Guembelina malocaucasica, Gublerina primitiva
Emended description:
Character matrix
| test outline: | Triangular | chamber arrangement: | Biserial | edge view: | Compressed | aperture: | |
| sp chamber shape: | N/A | coiling axis: | N/A | periphery: | N/A | aperture border: | N/A |
| umb chbr shape: | N/A | umbilicus: | N/A | periph margin shape: | N/A | accessory apertures: | None |
| spiral sutures: | Weakly depressed | umb depth: | N/A | wall texture: | Meridional costellae | shell porosity: | |
| umbilical or test sutures: | Weakly depressed | final-whorl chambers: | 5-7 | N.B. These characters are used for advanced search. N/A - not applicable | |||
Geological Range:
Last occurrence (top): at top of D. asymetrica zone (99% up, 83.7Ma, in Santonian stage). Data source: PETRIZZO, M. R., JIMÉNEZ BERROCOSO, A., FALZONI, F
First occurrence (base): near base of D. asymetrica zone (10% up, 85.4Ma, in Santonian stage). Data source:
Plot of range and occurrence data:
Honigstein, A., Almogi-Labin, A. & Rosenfeld, A. (1987). Combined ostracod and planktonic foraminiferal biozonation of the Late Coniacian - Early Maastrichtian in Israel. Journal of Micropalaeontology. 6(2): 41-60. gs Nederbragt, A. J. (1991). Late Cretaceous biostratigraphy and development of Heterohelicidae (planktic foraminifera). Micropaleontology. 37: 329-372. gs Sigal, J. (1952). Apercu stratigraphique sur la micropaleontologie du Cretace. XIX Congr. géol. internat., Algers, Monographies Regionales. 1(26): 3-43. gsReferences:

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Sigalia deflaensis compiled by the pforams@mikrotax project team viewed: 9-10-2026
Short stable page link: https://mikrotax.org/pforams/index.php?id=110532 Go to Archive.is to create a permanent copy of this page - citation notes |
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