pforams@mikrotax - Gublerina

pforams@mikrotax - Gublerina pforams@mikrotax - Gublerina

Gublerina

Classification: pf_mesozoic -> Heterohelicidae -> Gublerina
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)
			Gublerina cuvillieri
			Gublerina rajagopalani
			Gublerina sp. Specimens which cannot be assigned to established species

Taxonomy

Citation: Gublerina Kikoine 1948

Rank: Genus

Type species: Gublerina cuvillieri Kikoine, 1948

Original description: Se différencie totalement de tous les autres genres d'Heterohelicidae par son espace intercalaire déprimé et non pourvu de loges.

Entries in the Catalog of original descriptions: Gublerina

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, the 2 rows of chambers diverge leaving nonseptate central space that later is partially occupied by chamber proliferation.

Morphology:

Test compressed, flabelliform, early stage planispiral, later biserial and increasing rapidly in breadth, the two series of chambers diverging to leave a broad nonseptate central area that later is partially occupied by chamber proliferation, sutures depressed; wall calcareous, finely perforate, ornamented with longitudinal costae and nodes, most prominently in the early stage; aperture an arch at the base of the final chamber.

Geological Range:
Last occurrence (top): in upper part of Maastrichtian Stage (79% up, 67.3Ma, in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): in lower part of Campanian Stage (38% up, 79.2Ma, in Campanian stage). Data source: Total of range 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
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Heterohelicidae

References:

Kikoine, J. (1948). Les Heterohelicidae du Crétacé supérieur pyrénéen. Bulletin de la Société Géologique de France. 18(1-3): 15-35. gs V O

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

Gublerina compiled by the pforams@mikrotax project team viewed: 20-3-2023

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