arrayname: original 

Globotruncana dupeublei

Taxonomy

Original description: Umbilical Side -Primary aperture umbilical. -Sutures straight to curved, often depressed. -7 to 9 chambers, trapezoidal to rectangular, with flat or convex, smooth surface. -Adumbilical ridges developed on all chambers, oblique; sutural ridges sometimes enveloped by succeeding chambers. -Umbilicus: a little more than 1/3 of the maximum diameter. -Umbilical system composed of large tegilla, each tegillum covering a large part of the umbilicus. Spiral Side -Outline typically lobate. -Sutures curved to straight, raised and beaded, joining the spiral suture at almost right angles. -Chambers typically petaloid with a smooth and flat surface. -Chambers increasing slowly in size as added. Lateral View -Trochospire of variable height. -Profile symmetrical or asymmetrical due to higher convexity of the umbilical side. -One peripheral keel. Size: 0.8 to 0.9 mm.

Entries in the Catalog of original descriptions: Globotruncana dupeublei

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): 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: Globotruncana dupeublei, synonyms included - Globotruncana dupeublei; Globotruncana flexuosa;
• See also space-time plot :: Samples map :: Parent: Globotruncana

Globotruncana dupeublei compiled by the pforams@mikrotax project team viewed: 17-3-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110158 Go to Archive.is to create a permanent copy of this page - citation notes

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