Palaeopontosphaera patula sensu Lambert 1993


Classification: Mesozoic -> Podorhabdales -> Biscutaceae -> Boletuvelum -> Palaeopontosphaera patula sensu Lambert 1993
Sister taxa: B. candens, P. patula sensu Lambert 1993, B. sp.,

Distinguishing features: Biscutum-like species with spines varying from low and simple, to tall hollow and distally covered


Taxonomy:

Citation: Palaeopontosphaera patula sensu Lambert 1993
Rank: Species
Notes & discussion: Lambert (1993) described a highly variable Biscutum-like species from Albian laminated sediments off Cameroun. The form with the largest spines is similar to Boletuvelum candens although the simpler forms are more like Biscutum dubium. The name he appied, Palaeopontosphaera patula, does not seem a very good choice since Discorhabdus patulus is a poorly understood Jurassic coccolith and has a flaring rather than a closed spine

Farinacci & Howe catalog pages:

Distinguishing features: Biscutum-like species with spines varying from low and simple, to tall hollow and distally covered

Search data:
TagsLITHS: placolith, elliptical, cylindrical, hollow, CA: process, closed, V-UNITS: V-prominent, DETAILS: ca_disjunct, rim-bicyclic,
MetricsLith size: 3.5->4.5µm;
Sources: Lambert illus figs (diameter of base)
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Albian Stage (100.50-112.95Ma, top in Albian stage). Data source: Lambert 1993
First occurrence (base): within Albian Stage (100.50-112.95Ma, base in Albian stage). Data source: Lambert 1993

Plot of occurrence data:

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

    References:

    Lambert, B. (1993). Nannofossiles calcaires de l'Albien supérieur et du Vraconnien du Cameroun méridional (Deuxième Partie). Cahiers de Micropaleontologie. 8(2): 183-225. gs


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    Palaeopontosphaera patula sensu Lambert 1993 compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-2-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10851 Go to Archive.is to create a permanent copy of this page - citation notes



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