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Laeviheterohelix


Classification: pf_mesozoic -> Heterohelicidae -> Laeviheterohelix
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 0-800Ma)






Specimens which cannot be assigned to established species

Taxonomy

Citation: Laeviheterohelix Nederbragt, 1991
Rank: Genus

Original description: Diagnosis: Test calcareous, biserial throughout or with an initial planispiral coil; wall microperforate and smooth with scattered pustules, or with pores situated in the center of a pore mound. Aperture a simple arc, bordered by distinct flanges.

Entries in the Catalog of original descriptions: Laeviheterohelix,

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 Turonian Stage (89.77-93.90Ma, base in Turonian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous

References:


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Laeviheterohelix compiled by the pforams@mikrotax project team viewed: 21-7-2019

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Short stable page link: http://mikrotax.org/pforams/index.php?id=110300 Go to Archive.is to create a permanent copy of this page - citation notes



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