Gansserina gansseri

Taxonomy

Original description: "Test flat on dorsal side, ventrally strongly inflated. The chambers of the last whorl, usually five in number, surround a deep umbilicus. The suture lines on the dorsal side are curved and in many cases finely beaded. A distinct marginal keep separates the flat dorsal part from the inflated ventral side. Suture lines of the ventral side are slightly curved, indicating a slight overlapping of chambers. The wall, and particularly the ventral part of it, is somewhat rough or spiny."

Entries in the Catalog of original descriptions: Globotruncana gansseri, Globotruncana arabica, Globotruncana (Rugotruncana) gansseri dicarinata, Globotruncana gansseri gandolfii, Globotruncana lugeoni, Globotruncana qabeliatensis, Globotruncana gansseri subgansseri, Globotruncana youssefi

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.64-69.27Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): at base of G. gansseri zone (0% up, 73.8Ma, in Campanian stage). Data source: zonal marker (from Timescale Creator)

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: Gansserina gansseri, synonyms included - Gansserina gandolfii; Gansserina gansseri; Gansserina subgansseri; Gansserina youssefi; Globotruncana arabica; Globotruncana gansseri; Globotruncana gansseri gandolfi; Globotruncana gansseri subgansseri; Globotruncana lugeoni; Globotruncana oussefi; Globotruncana qabeliatensis;
• See also space-time plot :: Samples map :: Parent: Gansserina

Gansserina gansseri compiled by the pforams@mikrotax project team viewed: 28-4-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110112 Go to Archive.is to create a permanent copy of this page - citation notes

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