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:
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:
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).
LITHS: murolith, elliptical, CA: ca_disjunct, CSPH: tubular, elongated, |
Lith size: 0.7->2µm; Coccosphere size: 5->25µm; |
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:
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: ; References:
Calciopappus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-10-2024
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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