Nannotax3 - ntax_main - Calyptrosphaera sp. strain RCC1181 Nannotax3 - ntax_main - Calyptrosphaera sp. strain RCC1181

Calyptrosphaera sp. strain RCC1181


Classification: ntax_main -> Holococcoliths -> convex -> Calyptrosphaera sp. strain RCC1181
Sister taxa: C. sphaeroidea HOL, S. pulchra HOL oblonga type, S. pulchra HOL pirus type, S. pulchra HOL galea type, C. divergens, C. lluisae ⟩⟨ C. heimdaliae, Flosculosphaera, Gliscolithus ⟩⟨ C. radiata, C. sp. strain RCC1181


Taxonomy:
Citation: Calyptrosphaera sp. strain RCC1181
Taxonomic rank: generic level id
Taxonomic discussion: Various unidentified culture strains have been assigned to Calyptrosphaera sp. Strain RCC1181 from the Roscoff culture collection has been shown, by Ben-Joseph et al. (2023) and Avrahami et al. (2024), to produce distinctive holococcoliths. These strongly suggest it is an undescribed species. [my interpretation - JRY 2025]

Distinguishing features:
Parent taxon (convex): Holococcoliths with tube, covered distally by a convex cover
This taxon: holococcoliths small (1-1.5 µm) with bulbous protrusion on a flat base, no openings, monomorphic

Farinacci & Howe catalog pages:


Cultures: Strains of this species are maintained in culture, for details see Roscoff Culture Collection.

Search data:
Lith size: 1->1.5µm; Coccosphere size: 10->15µm; Liths per sphere: 80->140
Data source notes: rough estimates from published SEM images
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:
First occurrence (base): within no known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:

Plot of occurrence data:

References:

Avrahami, E. M., Eyal, Z., Varsano, N., Zagoriy, I., Mahamid, J. & Gal, A. (2024). Transport-limited growth of coccolith crystals. Advanced Materials. 36: 1-9. gs

Ben-Joseph, O., et al. (2023). Crystallization of coccolith calcite at different life-cycle phases exhibits distinct degrees of cellular confinement. Small Structures. 4: 1-9. gs


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Calyptrosphaera sp. strain RCC1181 compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-7-2026

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1855 Go to Archive.is to create a permanent copy of this page - citation notes



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