Taxonomy
Original description: Translated from French. "Diagnosis. - A species characterized by a slight elongation of the chambers, indeed placing this form between two genera, Globigerina and Hastigerinella. "Description: - Test with a globigerinid mode of coiling. The chambers, numbering 5 in the last whorl, are strongly inflated, not compressed and slightly elongate in a radial direction; they are often shifted with regard to a plane perpendicular to the coiling axis. The aperture is protected by an umbilical lip.
Entries in the Catalog of original descriptions: Hastigerinella simplicissima
Character matrix
test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | - | aperture: | Umbilical-extraumbilical |
sp chamber shape: | Elongate | coiling axis: | Low | periphery: | N/A | aperture border: | Thin lip |
umb chbr shape: | Elongate | umbilicus: | Narrow | periph margin shape: | Moderately rounded | accessory apertures: | Relict |
spiral sutures: | Strongly depressed | umb depth: | Shallow | wall texture: | Finely pustulose | shell porosity: | - |
umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 4.5-5.5 | N.B. These characters are used for advanced search. N/A - not applicable |
Geological Range:
Last occurrence (top): within Cenomanian Stage (93.90-100.50Ma, top in Cenomanian stage). Data source: [copied from Chronos database]
First occurrence (base): within Cenomanian Stage (93.90-100.50Ma, base in Cenomanian stage). Data source: [copied from Chronos database]
Plot of range and occurrence data:
Falzoni, F. & Petrizzo, M. R. (2020). Patterns of planktonic foraminiferal extinctions and eclipses during Oceanic Anoxic Event 2 at Eastbourne (SE England) and other mid-low latitude locations. Cretaceous Research. 116: 1-28. gs Falzoni, F., Petrizzo, M. R., Jenkyns, H. C., Gale, A. S. & Tsikos, H. (2016). Planktonic foraminiferal biostratigraphy and assemblage composition across the Cenomanian–Turonian boundary interval at Clot Chevalier (Vocontian Basin, SE France). Cretaceous Research. 59: 69-97. gs Magne, J. & Sigal, J. (1954). Description des especes nouvelles; 1 - Foraminiferes. In, Cheylan, G., Magne, J., Sigal, J. & Grekoff, N. (eds) Resultats geologiques et micropaleontologiques du sondage d' El Krachem (Hauts Plateaux algerois). Bulletin de la Société Géologique de France . 3(4-6): 471-492. gs Peryt, D. (1980). Planktic foraminifera zonation of the Upper Cretaceous in the middle Vistula River valley, Poland. Palaeontologia Polonica. 41: 1-123. gsReferences:
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Clavihedbergella simplicissima compiled by the pforams@mikrotax project team viewed: 6-2-2025
Short stable page link: https://mikrotax.org/pforams/index.php?id=110048 Go to Archive.is to create a permanent copy of this page - citation notes |
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