Nannotax3 - ntax_cenozoic - Canistrolithus

Canistrolithus


Classification: ntax_cenozoic -> Coccolith families inc sed -> Alisphaeraceae -> Canistrolithus
Sister taxa: Alisphaera, Canistrolithus, Polycrater phase

Daughter taxa (time control age-window is: 0-800Ma)
Canistrolithus valliformis
Typical form - with peg-like nodes around the central area
Canistrolithus sp.
Specimens which cannot be assigned to established species

Taxonomy:

Citation: Canistrolithus Jordan & Chamberlain, 1993
Rank: Genus
Type species: Canistrolithus valliformis Jordan & Chamberlain, 1993

Distinguishing features:
Parent taxon (Alisphaeraceae): Heterococcoliths asymetric, arranged in meridional rows on coccosphere; V-unit forms flange, R-unit basal. Also nannolith phase "Polycrater" with quadrate aragonitic liths.
This taxon: Coccoliths elongate oblong muroliths with asymmetric distal flange

Farinacci & Howe catalog pages: Canistrolithus *


Morphology:

Monothecate, coccoliths are elongate, oblong, muroliths with an asymmetric distal flange. Outer tube wall elements show weakly anticlockwise imbrication; inner tube wall elements vertical. In comparison to Alisphaera, there is no proximal flange or grill and the tube is higher, but basic structure appears similar (Kleijne et al. 2002).

Size:

Search data:
LITHS: murolith, asymmetric, elliptical, CA: vacant,
CSPH: elongated, monomorphic, CROSS-POLARS: V-prominent, R-prominent,
Lith size: 2.2->3.5µm; Coccosphere size: 15->25µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): Extant. Data source: Total of range of species in this database
First occurrence (base): at top of No known fossil record modern (100% up, 0Ma, in "Holocene" stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Jordan, R. W. & Chamberlain, A. H. L. (1993). Canistrolithus valliformis gen. et sp. nov. (Syracosphaeraceae, Prymnesiophyta), a comparison with the genus Alisphaera. Phycologia. 32(5): 373-378. gs

Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research, Special Issue. 1: 1-132. gs V O


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Canistrolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 27-9-2022

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=234 Go to Archive.is to create a permanent copy of this page - citation notes



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