Praegublerina pseudotessera

Taxonomy

Original description: Test compressed 1½ - 2 times as long as broad, rapidly tapering with greatest breadth at the last pair of chambers, periphery indented throughout; chambers somewhat inflated, broader than high throughout, in the adult somewhat curved and broader; sutures depressed, somewhat curved in the last portion; wall smooth and polished, very finely perforate; aperture very high, arched opening with a slight lip and distinct flanges, but not extending far onto the preceding chamber. 

Entries in the Catalog of original descriptions: Guembelina pseudotessera

Distinguishing features:
Parent taxon (Praegublerina): Similar to Gublerina but: 1. chamber sets increasing by one chamber at a time rather than three; 2. finer costae; 3. transverse biaperturate walls in multiserial part.
This taxon: From Georgescu, Saupe, and Huber, 2009: "Praegublerina pseudotessera differs from Heterohelix planata by having (i) divergent rows of biserial chambers resulting in the development of a central nonseptate area in the adult part of the test, (ii) reniform chambers in the adult part of the test, (iii) larger periapertural flanges and (iv) coarser costae. It differs from Gublerina rajagopalani in that it has an entirely finely costate test and lacks pseudokeels on the lateral sides of the test. Praegublerina pseudotessera differs from Laeviheterohelix pulchra (Brotzen 1936) in (i) being completely costate rather than ornamented with pore mounds and (ii) in having a central nonseptate area between the two rows of diverging chambers in the adult portion of the test."

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. elevata zone (79.33-83.65Ma, 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
• (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Praegublerina

Praegublerina pseudotessera compiled by the pforams@mikrotax project team viewed: 10-5-2026 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110441 Go to Archive.is to create a permanent copy of this page - citation notes

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