Kuglerina rotundata

Taxonomy

Original description: "The large, occasionally subspherical test starts with a low, trochoidal spiral which is followed in the adult by a somewhat higher volution with 5-6 chambers increasing little in size. The chambers of the last whorl are truncate at the apertural side, rounded at the periphery and much elongated in axial direction. The spiral side, with about 2 whorls, is usually slightly depressed. The aperture, as seen in the end chamber, is large, arcuate and opens into the deep and narrow umbilicus. The covering plate seems to be absent. The deep sutures are straight on the umbilical side, and straight to slightly curved on the spiral side. The surface is ornamented by numerous coarse pustules and small ridges arranged in an indistinct meridional pattern. All the investigated specimens are dextrally coiling."

Entries in the Catalog of original descriptions: Rugoglobigerina rugosa rotundata, Helvetiella atlantica, Globotruncana (Rugoglobigerina) rotundata subrotundata

Geological Range:
Last occurrence (top): within P. hariaensis zone (66.39-67.64Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. gansseri zone (71.73-73.80Ma, base in Campanian stage). Data source: [copied from Chronos 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.
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
• Taxon plotted: Kuglerina rotundata, synonyms included - Archaeoglobigerina rotundata; Globotruncana rotundata subrotundata; Helvetiella atlantica; Kuglerina rotundata; Rugoglobigerina rotundata; Rugoglobigerina subrotundata;
• See also space-time plot :: Samples map :: Parent: Kuglerina

Kuglerina rotundata compiled by the pforams@mikrotax project team viewed: 5-10-2026 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110298 Go to Archive.is to create a permanent copy of this page - citation notes

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