Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
| Sphaeroidinella dehiscens Large glossy test, like Ss. panaedehiscens but with supplementary apertures | ||||
| Sphaeroidinella sp. Specimens which cannot be assigned to established species | ||||
Catalog entries: Sphaeroidinella
Distinguishing features:
Parent taxon (Globigerinidae): Wall spinose, usually with 3½-6 globular chambers in final whorl, trochospiral or planispiral
This taxon: Like Sphaeroidinellopsis but with supplementary apertures
Character matrix
| test outline: | Ovate | chamber arrangement: | Trochospiral | edge view: | - | aperture: | Umbilical |
| sp chamber shape: | - | coiling axis: | High | periphery: | - | aperture border: | Thick flange |
| umb chbr shape: | - | umbilicus: | - | periph margin shape: | Broadly rounded | accessory apertures: | Sutural |
| spiral sutures: | - | umb depth: | - | wall texture: | - | shell porosity: | - |
| umbilical or test sutures: | - | final-whorl chambers: | 3.5-0 | N.B. These characters are used for advanced search. N/A - not applicable | |||
Most likely ancestor:
Sphaeroidinellopsis - at confidence level 5 (out of 5). Data source: Kennett & Srinivasan 1983.
Geological Range:
Last occurrence (top): Extant. Data source: Total of ranges of the species in this database
First occurrence (base): within PL1 [Atl.] zone (4.37-5.72Ma, base in Messinian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Primary source for this page: Fabbrini & Wade 2026, p. 18; Kennett & Srinivasan 1983, p.212
Brummer, G-J. A. & Kucera, M. (2022). Taxonomic review of living planktonic foraminifera. Journal of Micropalaeontology. 41: 29-74. gs Cushman, J. A. (1927a). An outline of a re-classification of the Foraminifera. Contributions from the Cushman Laboratory for Foraminiferal Research. 3: 1-105. gs O Fabbrini, A. & Wade, B. S. (2026). Sphaeroidinellopsis and Sphaeroidinella (planktonic foraminifera): morphological variability, wall texture and taxonomic implications. Journal of Systematic Palaeontology. -. gs Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gsReferences:

![]()
![]()
![]() |
Sphaeroidinella compiled by the pforams@mikrotax project team viewed: 13-10-2026
Short stable page link: https://mikrotax.org/pforams/index.php?id=104212 Go to Archive.is to create a permanent copy of this page - citation notes |