pforams@mikrotax - Berggrenia pforams@mikrotax - Berggrenia


Classification: pf_cenozoic -> Genera incertae sedis -> Berggrenia
Sister taxa: Berggrenia, Dentigloborotalia
Daughter taxa (time control age-window is: 0-800Ma)
Berggrenia pumilio
Berggrenia sp.
Specimens which cannot be assigned to established species


Citation: Berggrenia Parker 1976
taxonomic rank: genus
Type species: Berggrenia praepumilio
Taxonomic discussion: The phylogenetic position of this genus remains enigmatic. It features an adumbilically displaced ampullate final chamber, like the spinose Turborotalita, but its wall is non-spinose with the umbilical side ornamented by radial striae and pores concentrated along the sutures on the spiral side. For example, Saito et al. (1981) emphasized the ampullate final chamber to assign to Berggrenia the minute Turborotalita clarkei, a decision which we here reject. We consider it likely that Berggrenia represents a lineage of foraminifera that invaded the plankton from an independent benthic ancestor, and the genus must be retained until its phylogenetic position is resolved by genetic data. [Brummer & Kucera 2022]

Catalog entries: Berggrenia

Distinguishing features:
Parent taxon (Genera incertae sedis):
This taxon: Radial ridges on umbilical side:

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.



Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Total of ranges of the species in this database
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: Total of ranges of species in this database

Plot of occurrence data:


Brummer, G-J. A. & Kucera, M. (2022). Taxonomic review of living planktonic foraminifera. Journal of Micropalaeontology. 41: 29-74. gs

Parker, F. L. (1976). Taxonomic notes on some planktonic Foraminifera. Progress in Micropaleontology. 258-262. gs

Saito, T., Thompson, P. R. & Breger, D. (1981). Systematic Index of Recent and Pleistocene Planktonic Foraminifera. University of Tokyo Press, Tokyo. 1-190. gs


Berggrenia compiled by the pforams@mikrotax project team viewed: 21-4-2024

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