Coccolithus tenuiforatus


Classification: Coccolithophores -> Coccolithales -> Coccolithaceae -> Coccolithus -> C. pelagicus group -> Coccolithus tenuiforatus
Sister taxa: C. crassus, C. pelagicus, C. eopelagicus, C. miopelagicus, C. latus, C. bownii, C. tenuiforatus,

Distinguishing features: Delicate cross in central area


Taxonomy:

Citation: Coccolithus tenuiforatus (Clocchiatti and Jerkovic, 1970) Wise, 1983
Rank: Species
Basionym: Cruciplacolithus tenuiforatus Clocchiatti and Jerkovic, 1970
Notes & discussion: Specimens with this morphology have been observed at many levels when preservation is good.

Farinacci & Howe catalog pages: Cruciplacolithus tenuiforatus *

Distinguishing features: Delicate cross in central area

Search data:
TagsLITHS: placolith, elliptical, RIM: inner-tube-broad, psh-bicyclic, CA: cross, cross-axial,
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: 5->10µm;
Sources:
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Late Miocene Sub-Epoch (5.33-11.62Ma, top in Messinian stage). Data source: Original description
First occurrence (base): within Not set - Paleogene n/a (23.03-66.04Ma, base in Danian stage). Data source:

Plot of occurrence data:

References:

Clocchiatti, M. & Jerkovic, L., (1970). Cruciplacolithus tenuiforatus, nouvelle espèce de coccolithophoridé du Miocène d'Algerie et de Yougoslavie. Cahiers de Micropaleontologie, ser 2, 2: 1-6.

Wise, S.W., (1983). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 71 in the Falkland Plateau region, Southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project, 71: 481-550.

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Coccolithus tenuiforatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-7-2018

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Juan P. Pérez Panera (CONICET, Argentina)
Which will be the difference with Coccolithus staurion?
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Jeremy Young (UCL, UK)
This is not a very well worked out taxon but C. staurion has a more robust cross that nearly fills the c area and is clearly visible in LM. By contrast in C. tenuiforatus the cross is delicate and not really visible in LM.
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