Distinguishing features:
Parent taxon (convex): Holococcoliths with tube, covered distally by a convex cover
This taxon: Tube merges into cover; irregular crystallites
Farinacci & Howe catalog pages:
C. sphaeroidea * , C. sphaeroidea minor *
See also: Calyptrosphaera sphaeroidea HET ;
Search data:| LITHS: holococcolith, elliptical, hollow, CA: closed, CSPH: equant, monomorphic, CROSS-POLARS: V-prominent, R-prominent, |
| Lith size: 0.9->1.5µm; Coccosphere size: 5->12µm; Liths per sphere: 50->180 Data source notes: morphom data from Cros & Fortuño (2002) |
Geological Range:
Last occurrence (top): Extant. Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:
Plot of occurrence data:
Cros, L. & Fortuño, J. -M. (2002). Atlas of northwestern Mediterranean coccolithophores. Scientia Marina. 66: 1-186. gs Klaveness, D. (1973). The microanatomy of Calyptrosphaera sphaeroidea, with some supplementary observations on the motile stage of Coccolithus pelagicus. Norwegian Journal of Botany. 20: 151-162. gs Noël, M. -H., Kawachi, M. & Inouye, I. (2004). Induced dimorphic life cycle of a coccolithophorid, Calyptrosphaera sphaeroidea. Journal of Phycology. 40(1): 112-129. gs Schiller, J. (1913). Vorläufige Ergebnisse der Phytoplankton-Untersuchungen auf den Fahrten S.M.S. Najade in der Adria 1911/12. I. Die Coccolitophoriden. Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften in Wien. 122(1): 597-617. 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. S1: 1-132. gs References:

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Calyptrosphaera sphaeroidea HOL compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-7-2026
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=224 Go to Archive.is to create a permanent copy of this page - citation notes |
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