Nannotax3 - ntax_cenozoic - Calciopappus Nannotax3 - ntax_cenozoic - Calciopappus

Calciopappus


Classification: ntax_cenozoic -> Syracosphaerales -> Syracosphaeraceae -> Calciopappus
Sister taxa: Syracosphaera, Calciopappus, Michaelsarsia, Ophiaster

Daughter taxa (time control age-window is: 0-800Ma)
Calciopappus rigidus
BCs elliptical (1.0-1.7 µm) with radial laths, whorl coccoliths with 1 projection, 1 spine-bearing CFC
Calciopappus caudatus
BCs oblong (1.4-1.9 µm) with oblique laths, whorl coccoliths without projection, no CFCs
Calciopappus curvus
BCs elliptical (0.5-1.2 µm) with open central area, whorl coccoliths with 2 projections, spine coccoliths curved, no CFCs
Calciopappus sp.
Specimens which cannot be assigned to established species

Taxonomy:

Citation: Calciopappus Gaarder & Ramsfjell, 1954
taxonomic rank: Genus
Type species: Calciopappus caudatus Gaarder & Ramsfjell, 1954
Taxonomic discussion: See Archontikis et al 2023 for discussion of species

Distinguishing features:
Parent taxon (Syracosphaeraceae): BCs muroliths or placoliths with radial laths and axial structure, ofen with higlhy modified exothecal coccoliths
This taxon: Circum-flagellar coccoliths modified into elongate spines, supported by whorl coccoliths

Farinacci & Howe catalog pages: Calciopappus *


Morphology:

Lith types:
  1. BCs - muroliths, +/- oblong, with low narrow rim; axial structure is plaque formed of two rectangular laths, overlapped by ends of radial laths
  2. CFC - in C. rigidus a single coccolith with a moderate length spine usually occurs, with the spine protruding through the ring of whorl coccoliths.
  3. Whorl coccoliths - asymmetric ring-shaped planoliths. These surround the flagellar pole, overlying the spines.
  4. Spine coccoliths - arcuate base supports two struts that merge into very long slightly curved spine, with bayonet tip.
The spine coccoliths form inside the cell and are intially deployed swept-back parallel with the coccosphere, they can subsequently be released into a radial orientation, see Young et al. (2009).

Search data:
LITHS: murolith, elliptical, CA: ca_disjunct,
CSPH: tubular, elongated,
Lith size: 0.7->2µm; Coccosphere size: 5->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 ranges of the species in this database
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

Archontikis, O. A. et al. (2023b). Taxonomy and morphology of Calciopappus curvus sp. nov. (Syracosphaeraceae, Prymnesiophyceae), a novel appendage-bearing coccolithophore. Protist. 174(125983): 1-16. gs

Gaarder, K. R. & Ramsfjell, E. (1954). A new coccolithophorid from northern waters, Calciopappus caudatus. n. gen., n. sp. Nytt Magasin for Botanikk. 2: 155-156. gs

Young, J. R., Andruleit, H. & Probert, I. (2009). Coccolith function and morphogenesis, insights from appendage-bearing coccolithophores of the family Syracosphaeraceae (Haptophyta). Journal of Phycology. 45: 213-226. gs

Missing or ambiguous references: ;


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Calciopappus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-10-2024

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=195 Go to Archive.is to create a permanent copy of this page - citation notes
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