Tranolithus stemmerikii


Classification: Mesozoic -> Eiffellithales -> Chiastozygaceae -> Tranolithus -> Tranolithus stemmerikii
Sister taxa: T. bitraversus, T. gabalus, T. incus, T. macleodiae, T. minimus, T. orionatus, T. praeorionatus, T. salillum, T. stemmerikii, T. sp.,

Distinguishing features: Tranolithus species with small transerve bar and strongly birefringent inner cycle, composed of four plates that fill the central area and surround two openings aligned with the long axis


Taxonomy:

Citation: Tranolithus stemmerikii Thibault & Sheldon, in Thibault 2010
Rank: Species
Synonyms: This species is documented and referred to as Zeugrhabdotus praesigmoides in Sheldon (2008, Pl.1, figs 15-18)

Farinacci & Howe catalog pages: Tranolithus stemmerikii *

Distinguishing features: Tranolithus species with small transerve bar and strongly birefringent inner cycle, composed of four plates that fill the central area and surround two openings aligned with the long axis

Search data:
TagsLITHS: murolith, elliptical, CA: process, bar, V-UNITS: V-prominent, DETAILS: ca_disjunct, rim-unicyclic,
MetricsLith size: 5->8µm;
Sources: original description & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within UC16 zone (72.02-75.93Ma, top in Maastrichtian stage). Data source: Original description
First occurrence (base): within UC15d subzone (75.93-76.82Ma, base in Campanian stage). Data source: Original description

Plot of occurrence data:

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

    References:

    Sheldon, E. (2008). Upper Campanian-Maastrichtian calcareous nannofossil biostratigraphy of the Stevns-1 borehole, Denmark. Journal of Nannoplankton Research. 30(1): 39-49. gs :: view :: open

    Thibault, N. (2010). Calcareous nannofossils from the boreal Upper Campanian- Maastrichtian chalk of Denmark. Journal of Nannoplankton Research. 31(1): 39-56. gs :: view :: open


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    Tranolithus stemmerikii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 4-7-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11245 Go to Archive.is to create a permanent copy of this page - citation notes



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