Kuglerina

Daughter taxa (time control age-window is: 0-800Ma)
			Kuglerina rotundata
			Kuglerina sp. Specimens which cannot be assigned to established species

Taxonomy

Original description: The calcareous hyaline test is initially coiled in a low trochospiral, later becoming a high trochospiral with an accompanying shift in the axis of coiling. The early chambers are globular, inflated, and globigerine-like. Later chambers are axially (vertically) elongated and are broadly rounded. The early chambers are smooth to irregularly hispid. Later chambers exhibit fine costellae or traces of costellae arranged in a meridional pattern. The aperture is rounded, interiomarginal, and opens into a relatively small but deep umbilicus. Short apertural flaps extend into the umbilicus but do not form a cover-plate.

Entries in the Catalog of original descriptions: Kuglerina

Distinguishing features:
Parent taxon (Rugoglobigerinidae): Test trochospiral, chambers inflated, periphery rounded, not carinate; wall with pustules, costellae, or other rugosities; aperture umbilical, with portici or tegilla.
This taxon: Test relatively large, up to 0.5 mm in diameter, with moderately high trochospiral coil, chambers globular to somewhat elongate as seen in edge view, enlarging gradually, four to six in the final whorl, sutures radial, depressed, umbilicus about one-fourth the test diameter, periphery rounded, noncarinate, peripheral outline lobulate; wall calcareous, perforate, surface with prominent pustules and rugosities but without regularly aligned costellae; primary aperture umbilical, provided with tegilla and with both proximal and distal accessory apertures.

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. gansseri zone (71.73-73.80Ma, 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
• Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Rugoglobigerinidae

Kuglerina compiled by the pforams@mikrotax project team viewed: 10-12-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110297 Go to Archive.is to create a permanent copy of this page - citation notes

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Comments (2)

 

 

 

 

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Nadia

Posts: 1

Since: Feb 2020

Nadia(Guyana)

in line: Type species: Rugoglobigerina rngosa subsp. rotundata Brönnimann, 1952

rngosa changes to rugosa

25 February 2020 11:06

Jeremy Young

Posts: 539

Since: Jan 2017

Jeremy Young(UK)

Thanks - corrected now. Jeremy

25 February 2020 12:58

 

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