pforams@mikrotax - Berggrenia pumilio pforams@mikrotax - Berggrenia pumilio

Berggrenia pumilio


Classification: pf_cenozoic -> Genera incertae sedis -> Berggrenia -> Berggrenia pumilio
Sister taxa: B. pumilio, B. sp.

Taxonomy

Citation: Berggrenia pumilio (Parker, 1962)
taxonomic rank: species
Basionym: Globorotalia pumilio Parker, 1962
Taxonomic discussion: Small and rarely recorded species with distinct morphology and ornament, initially assigned by Parker (1962) to Globorotalia. This species has always been elusive, but it has been reported from the plankton (e.g. Rebotim et al., 2017) and when pictured always features the typical morphology and ornament (Saito et al., 1981; Schiebel and Hemleben, 2017). [Brummer & Kucera 2022]

Catalog entries: Globorotalia pumilio

Type images:

Distinguishing features:
Parent taxon (Berggrenia): Radial ridges on umbilical side:
This taxon: monospecific

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.

Description


Morphology:

Small, low trochospiral, 4½-6 chambers in the last whorl, umbilicus narrow and deep. Final chamber ampullate and adumbilically directed, or kummerform.
Coiling direction (in extant population)
: dextral


Wall type:
Wall is non-spinose with the umbilical side ornamented by radial striae and pores concentrated along the sutures on the spiral side [Brummer & Kucera 2022]

Size:
<180µm, usually <150µm

Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:Equally biconvexaperture:Umbilical-extraumbilical
sp chamber shape:Globularcoiling axis:Lowperiphery:N/Aaperture border:Thin lip
umb chbr shape:Globularumbilicus:Wideperiph margin shape:Moderately roundedaccessory apertures:None
spiral sutures:Moderately depressedumb depth:Shallowwall texture:Smoothshell porosity:Finely Perforate: 1-2.5µm
umbilical or test sutures:Moderately depressedfinal-whorl chambers:4.5-6 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology


Geographic distribution

In modern oceans a rare, temperate water, species [SCOR WG138]

Map of distribution from ForCenS database

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: present in the plankton (SCOR WG138)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:

Plot of occurrence data:

References:

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

Loeblich, A. & Tappan, H. (1994). Foraminifera of the Sahul shelf and Timor Sea. Cushman Foundation for Foraminiferal Research, Special Publication. 31: 1-661. gs O

Meilland, J., Cornuault, P., Morard, Raphaël, Brummer, Geert-J. A. & Kucera, M. (2022). Identification guide to extant planktonic foraminifera. Part 1: Family Candeinidae and genera Berggrenia, Bolivina, Dentigloborotalia, and Neogallitellia. ICES Identification Leaflets for Plankton. 196: 1-22. gs

Parker, F. L. (1962). Planktonic foraminiferal species in Pacific sediments. Micropaleontology. 8(2): 219-254. gs

Rebotim, A. et al. (2017). Factors controlling the depth habitat of planktonic foraminifera in the subtropical eastern North Atlantic. Biogeosciences. 14: 827-859. 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

Schiebel, R. & Hemleben, C. (2017). Planktic Foraminifers in the Modern Ocean. Springer-Verlag, Heidelberg. 1-358. gs

Siccha, M. & Kucera, M. (2017). ForCenS, a curated database of planktonic foraminifera census counts in marine surface sediment samples. Scientific Data. 4(1): 1-12. gs


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Berggrenia pumilio compiled by the pforams@mikrotax project team viewed: 20-6-2024

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Short stable page link: https://mikrotax.org/pforams/index.php?id=104007 Go to Archive.is to create a permanent copy of this page - citation notes



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Comments (2)

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Süheyla(Turkey)

Hello,

According to the geographic distribution map above, Berggrenia pumilio exists in the Eastern Mediterranean. Did I get right?

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Jeremy Young(UK)

Hi - only the red dots indicate samples where the species has been recorded. Go to Tools/Holocene bigeography maps to see the plot in detail, with all the explanations - but for this species there is almost no data, because it is too small to be routinely recorded in the ForCens database.

Jeremy