Cruciplacolithus nishii


Classification: Coccolithophores -> Coccolithales -> Coccolithaceae -> Cruciplacolithus -> Cruciplacolithus nishii
Sister taxa: C. neohelis, C. kanungoi, C. cruciformis, C. flavius, C. klausii, C. nishii, C. tarquinius, C. asymmetricus, C. edwardsii, C. frequens, C. intermedius, C. primus, C. subrotundus, C. tenuis, C. filigranus, C. inseadus, C. latipons, C. sp.,

Taxonomy:

Citation: Cruciplacolithus nishii Bown & Newsam 2017
Rank: Species

Distinguishing features: Small to medium sized Cruciplacolithus with narrow shields and wide central area spanned by narrow axial crossbars bearing a spine.

Farinacci & Howe catalog pages: Cruciplacolithus nishii *


Morphology remarks: Differentiation: Distinguised from other Cruciplacolithus by the wide central area and spine-bearing cross – an unusual feature amongst Cenozoic placoliths. [Bown & Newsam 2017]


Size: Holotype L = 4.2μm (Paratype L = 4.3μm). [Bown & Newsam 2017]

Search data:
TagsLITHS: placolith, elliptical, RIM: psh-bicyclic, CA: cross, cross-axial, PROCESS: hollow, spine,
CSPH: spherical, monomorphic, V-UNITS: distal shield, px-tube, R-UNITS: c-str, ds-tube, prox shield, DETAILS: ca_disjunct, rim-bicyclic, isogyres oblique,
MetricsLith size: 4->6µm;
Sources:
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP17 zone (37.32-40.40Ma, top in Priabonian stage). Data source: Bown & Newsam 2017
First occurrence (base): within NP16 zone (40.40-42.87Ma, base in Lutetian stage). Data source: Bown & Newsam 2017

Plot of occurrence data:

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

    References:

    Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs


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    Cruciplacolithus nishii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-11-2019

    Taxon Search:
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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=391 Go to Archive.is to create a permanent copy of this page - citation notes



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