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Praegublerina


Classification: pf_mesozoic -> Heterohelicidae -> Praegublerina
Sister taxa: Braunella, Gublerina, Hendersonites, Heterohelix, Huberella, Laeviheterohelix, Lunatriella, Planoglobulina, Planoheterohelix, Praegublerina, Protoheterohelix, Pseudoguembelina, Pseudotextularia, Racemiguembelina, Rectoguembelina, Sigalia, Spiroplecta, Ventilabrella, Zeauvigerina,
Daughter taxa (blue => in age window 0-300Ma)



Specimens which cannot be assigned to established species

Taxonomy

Citation: Praegublerina Georgescu, Saupe and Huber 2009
Rank: Genus
Basionym: Gublerina acuta robusta
Type species: Gublerina acuta robusta de Klasz 1953
Taxonomic discussion: Praegublerina nov. gen. differs from Heterohelix in having (i) a central nonseptate area between the two rows of diverging chambers, (ii) a chamber proliferation stage in the evolved taxa (e.g., P. acuta, P. robusta) and (iii) coarser costae than in H. planata, its ancestral species, and reticulate ornamentation, the latter being present either on distinct parts of the test or all over the test surface. Praegublerina differs from Gublerina in having (i) a multiserial stage with chamber sets increasing their number by one chamber at a time rather than three chambers with each successive chamber set, (ii) finer costae (when present) and reticulate ornamentation without smooth sutures and unornamented portions and (iii) transverse biaperturate walls between the chambers of the multiserial chamber stage (text-figure 4).

Type images:

Original description: Praegublerina:

Entries in the Catalog of original descriptions: Praegublerina;

Short diagnosis: Tests are biserial throughout or with a multiserial chamber stage in the adult portion; a chamber proliferation stage follows the biaperturate progressive chamber; maximum of three multiserial chamber sets that gradually increase their number by one; test ornamentation costate or reticulate throughout, or a combination of the two kinds.

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): within Campanian Stage (72.05-83.64Ma, base in Campanian stage). Data source: Total of range of species in this database

Plot of occurrence data:

NB Plotting of Neptune data has been disabled on the Mesozoic pages because the dataset is both small and badly affected by a few sites with erroneous age models (our obs Huber, Petrizzo, Young, Nov 2016). The data can still be viewed via the range plottertool - tools menu.

References:

Georgescu Saupe & Huber 2009 [sorry, not in our bibliography yet]


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Praegublerina compiled by the pforams@mikrotax project team viewed: 22-8-2017

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