Planoglobulina
Classification: pf_mesozoic -> Heterohelicidae -> Planoglobulina
Sister taxa: Heterohelix, Spiroplecta ⟩⟨ Braunella, Hendersonites, Huberella, Laeviheterohelix, Planoheterohelix, Protoheterohelix, Pseudoguembelina, Pseudotextularia ⟩⟨ Planoglobulina, Ventilabrella, Gublerina, Praegublerina, Sigalia, Racemiguembelina ⟩⟨ Lunatriella, Rectoguembelina, Zeauvigerina
Daughter taxa (time control age-window is: 0-800Ma) | ||||
 |  |  | Planoglobulina acervulinoides | |
 |  |  | Planoglobulina brazoensis | |
 |  |  | Planoglobulina browni | |
 |  |  | Planoglobulina carseyae | |
 |  |  | Planoglobulina manuelensis | |
 |  |  | Planoglobulina multicamerata | |
 |  |  | Planoglobulina riograndensis | |
| Planoglobulina sp. Specimens which cannot be assigned to established species | ||||
Taxonomy
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:
Parent taxon (Heterohelicidae): Aperture symmetrical, ranging from a low slit to a high arch at the base of the final chamber, becoming terminal in uniserial taxa.
This taxon: Test flabelliform, biserial stage followed by a proliferation of chambers in the same plane. Medium to coarse costae.
Morphology:
Geological Range:
Last occurrence (top): at top of P. hariaensis zone (100% up, 66.4Ma, in Maastrichtian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within G. elevata zone (79.33-83.65Ma, base in Campanian stage). Data source: Total of ranges of species in this database
Plot of range and occurrence data:
- Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
- Triangles indicate an event for which a precise placement has been suggested
- See also: customisable plot Parent: Heterohelicidae
Loeblich, A. R. & Tappan, H. (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York. 1-1059. gsReferences:
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Planoglobulina compiled by the pforams@mikrotax project team viewed: 17-12-2025
Short stable page link: https://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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