Micrantholithus tinus


Classification: Coccolithophores -> Braarudosphaerales -> Braarudosphaeraceae -> Micrantholithus -> Micrantholithus tinus
Sister taxa: M. angulosus, M. astrum, M. attenuatus, M. bramlettei, M. breviradiatus, M. bulbosus, M. crenulatus, M. disculus, M. entaster, M. excelsus, M. flos, M. hebecuspis, M. minimus, M. mirabilis, M. pinguis, M. tinus, M. vesper, M. sp.,

Taxonomy:

Citation: Micrantholithus tinus Kapellos & Schaub 1973
Rank: Species

Distinguishing features: Micrantholithus with bifurcate ray-like extension from each segment (sutures do not go along arms). Resembles a discoaster but evidently shows the birefringence of a pentalith and a specimen of M. concinnus with short rays is illustrated from the same sample so the identification seems well-founded.

Farinacci & Howe catalog pages: Micrantholithus tinus *


Morphology remarks: Some similarity to M. bramlettei but rays are much longer.

Search data:
TagsLITHS: nannolith-radiate, pentagonal,
CSPH: not known, T-UNITS: all,
MetricsLith size: 18->22µm; Segments: 5->5; Liths per sphere: 12->12
Sources: lith size (diameter) from OD; lith numbers assumed from geometry
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP13 zone (49.11-50.50Ma, top in Ypresian stage). Data source: Kapellos & Schaub 1973
First occurrence (base): within NP12 zone (50.50-53.70Ma, base in Ypresian stage). Data source: Kapellos & Schaub 1973

Plot of occurrence data:

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

    References:

    Kapellos, C. & Schaub, H. (1973). Zur Korrelation von Biozonierung mit Grossforaminiferen und Nannoplankton im Paläogen der Pyrenaen. Eclogae Geologicae Helvetiae. 66: 687-737. gs


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    Micrantholithus tinus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-10-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=872 Go to Archive.is to create a permanent copy of this page - citation notes



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