Praeglobotruncana gungardensis

Taxonomy

Original description: Medium to large-sized, moderately high to low trocho- spiral test; circular to suboval outline, moderately to strongly asymmetrical profile with flat to moderately convex spiral side, and moderately to strongly convex umbilical side; equatorial periphery moderately lobate, 5.5 to 7 chambers in the last whorl. Spiral side with petaloid chambers increasing slowly and sometimes irregularly in size as added; chamber surface is slightly inflated and moderately pustulose to smooth at the end of the last whorl; spiral sutures are curved to straight and generally depressed with the exception of the last 2 chambers of the penultimate and first 1 to 3 chambers of the last whorl, which usually show weakly raised spiral sutures marked by aligned pustules. Umbilical side with subglobular to subtriangular chambers and straight and depressed sutures; umbilical area about 1/3 of the maximum diameter; primary aperture extraumbilical- umbilical. Relatively wide imperforate peripheral band marked by randomly distributed to partially aligned pustules usually disappearing toward the end of the last whorl; ultimate chambers usually tilted toward the umbilical area. Wall texture macroperforate.

Entries in the Catalog of original descriptions: Praeglobotruncana gungardensis

Geological Range:
Notes: Recorded by Falzoni & Petrizzo 2020 as occurring throughout their studied section at Folkestone - i.e. through the R. cushmani and W. archaeocretacea zones, so may have a longer total range.
Last occurrence (top): within W. archaeocretacea zone (93.52-94.03Ma, top in Turonian stage). Data source: Falzoni & Petrizzo 2020
First occurrence (base): within R. cushmani zone (94.03-98.69Ma, base in Cenomanian stage). Data source: Falzoni & Petrizzo 2020

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
• (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Praeglobotruncana

Praeglobotruncana gungardensis compiled by the pforams@mikrotax project team viewed: 21-9-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110596 Go to Archive.is to create a permanent copy of this page - citation notes

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