Calculites sarstedtensis


Classification: Mesozoic -> Holococcoliths -> Common genera -> Calculites -> Calculites sarstedtensis
Sister taxa: C. favosus, C. anfractus, C. axosuturalis, C. obscurus, C. ovalis, C. rosalyniae, C. additus, C. cenomanicus, C. cyclops, C. juliae, C. maghredaswampensis, C. paulus, C. percernis, C. proscissus, C. turonicus, C. sarstedtensis, C. suturus, C. sp.,

Distinguishing features: Small elliptical holococcolith forming single block with low birefirngence; process and several depressions


Taxonomy:

Citation: Calculites sarstedtensis Crux, 1987
Rank: Species

Farinacci & Howe catalog pages: Calculites sarstedtensis *

Distinguishing features: Small elliptical holococcolith forming single block with low birefirngence; process and several depressions


Morphology remarks: "A species of Calculites with a thin outer rim and up to eight depressions in the distal surface arranged around a central boss or spine base," [Crux 1987] 

Size: Length of coccolith 3.4-4.0 µm (five specimens measured). [Crux 1987]

Search data:
TagsLITHS: holococcolith, elliptical, CA: pores, vacant, V-UNITS: V-prominent, R-UNITS: R-prominent, DETAILS: ca_conjunct, 1ou, rim-unicyclic,
MetricsLith size: 3->5µm;
Sources: holotype +/-1µm
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Late Hauterivian Substage (130.77-133.09Ma, top in Hauterivian stage). Data source: Crux, 1987 (original description)
First occurrence (base): within Late Hauterivian Substage (130.77-133.09Ma, base in Hauterivian stage). Data source: Crux, 1987 (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: Calculites

    References:

    Crux, J. A. (1987c). Six new species of calcareous nannofossils from the Lower Cretaceous strata of England and Germany. INA Newsletter. 9: 30-35. gs :: view :: open

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    Calculites sarstedtensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 1-6-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10178 Go to Archive.is to create a permanent copy of this page - citation notes
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