pforams@mikrotax - Pseudotextularia

Pseudotextularia

Classification: pf_mesozoic -> Heterohelicidae -> Pseudotextularia
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)
			Pseudotextularia elegans
			Pseudotextularia intermedia
			Pseudotextularia nuttalli
			Pseudotextularia sp. Specimens which cannot be assigned to established species

Taxonomy

Citation: Pseudotextularia Rzehak 1891

Rank: Genus

Type species: Cuneolina elegans Rzehak, 1891

Taxonomic discussion: A neotype (Natural History Museum, Vienna, Geol.-Palaeont. Coln. MI-465) was designated (S. Nash, 1981, *2231, p. 74) for Pseudotextularia elegans (Rzehak) from the type locality.

Original description: Mit der Gattung Cuneolina, wie sie ursprünglich von d'Orbigny aufgestellt wurde, lässt sich unsere Form ohne Zwang nicht vereinigen. Sie weicht aber auch von den typischen Textularien so weit ab, dass die Aufstellung einer neuen Gattung — Pseudotextularia — gerechtfertigt sein dürfte. Es ist nicht unmöglich, dass die von verschiedenen Autoren beschriebenen tri- und multiserialen Textularien ebenfalls hieher gehören.

Entries in the Catalog of original descriptions: Pseudotextularia

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: Adult biserial chambers expanded such that test breadth is greater than width in side view.

Emended description:

Morphology:

Test subtriangular in outline, with biserially arranged, inflated chambers compressed parallel to the line of junction between the two series of chambers so that the test appears broader in apertural or edge view than from the sides with the zigzag suture between chambers, sutures depressed; wall calcareous, finely perforate, surface with longitudinal, slightly irregular to discontinuous fine to medium coarse costae; aperture a broad low to medium arched basal opening bordered by a narrow lip.

Wall type:

Size:

Geological Range:
Last occurrence (top): near top of Maastrichtian Stage (94% up, 66.4Ma, in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): at top of Turonian Stage (97% up, 89.9Ma, in Turonian 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:

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

Pseudotextularia compiled by the pforams@mikrotax project team viewed: 25-5-2022

Taxon Search:

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110467 Go to Archive.is to create a permanent copy of this page - citation notes

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