Classification: pf_mesozoic -> Heterohelicidae -> Planoglobulina
Sister taxa: Braunella, Gublerina, Hendersonites, Heterohelix, Huberella, Laeviheterohelix, Lunatriella, Planoglobulina, Planoheterohelix, Praegublerina, Protoheterohelix, Pseudoguembelina, Pseudotextularia, Racemiguembelina, Rectoguembelina, Sigalia, Spiroplecta, Ventilabrella, Zeauvigerina,
Daughter taxa: (blue => in age window 0-800Ma)

Specimens which cannot be assigned to established species


Citation: Planoglobulina Cushman 1927
Rank: Genus
Basionym: Guembelina acervulinoides
Type species: Guembelina acervulinoides Egger, 1902
Taxonomic discussion: A neotype (USNM 170316) was designated for Planoglobulina acervulinoides (Egger) from the type locality by S. E. Martin, 1972 (*2051), p. 81.

Original description: Test with the earliest chambers in the microspheric form planospiral, followed by a series arranged biserially and in the adult by a series ofglobular chambers spread out fan shaped or even partially extending back toward the earlier chambers on either side, the later chambers in a single plane; wall calcareous, perforate.

Entries in the Catalog of original descriptions: Planoglobulina

Distinguishing features: Test flabelliform, early biserial stage with rapidly enlarging chambers followed by a proliferation of chambers in the same plane, chambers inflated, subglobular, sutures distinct, depressed; wall calcareous, hyaline, perforate, surface with medium to coarse but discontinuous longitudinal costae that parallel the margins of the chambers, lateral cameral flanges with bordering rims may merge and become continuous ridges on the later chambers; arched basal apertures in the adult commonly at both sides of the multiseriate chambers.

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): within Santonian Stage (83.64-86.26Ma, base in Santonian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous


Loeblich, A. R. & Tappan, H. (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York. 1-1059. gs :: ::


Planoglobulina compiled by the pforams@mikrotax project team viewed: 14-8-2020

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Short stable page link: http://mikrotax.org/pforams/index.php?id=110390 Go to Archive.is to create a permanent copy of this page - citation notes

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