Nannotax3 - ntax_cenozoic - Algirosphaera robusta Nannotax3 - ntax_cenozoic - Algirosphaera robusta

Algirosphaera robusta

Classification: ntax_cenozoic -> Syracosphaerales -> Rhabdosphaeraceae -> Algirosphaera -> Algirosphaera robusta
Sister taxa: A. cucullata, A. fabaceus, A. meteora, A. robusta, A. sp.


Citation: Algirosphaera robusta (Lohmann 1902) Norris, 1984
taxonomic rank: Species
Basionym: Syracosphaera robusta Lohmann 1902
Synonyms: There are also others, see Kleijne (1992). Subdivisions based on nature or number of circum-flagellar coccoliths, coccosphere shape, and shape of body coccoliths have been suggested but do not seem meaningful (Kleijne 1992, Probert et al., 2007).

Distinguishing features:
Parent taxon (Algirosphaera): Body coccoliths with well-developed radial lath cycle; domal or double-lipped protrusion; coccosphere dimorphic, CFCs larger and taller
This taxon: Coccoliths elongate, protrusion with internal rods and tile cover

Farinacci & Howe catalog pages: S. robusta * , A. oryza [no catalog entry yet], S. quadricornu + * , A. aurea * , A. bicornu [no catalog entry yet], A. campanula [no catalog entry yet], A. spinulosa [no catalog entry yet]


Coccosphere: Motile, dimorphic. Prominent flagellar opening surrounded by 3 CFCs with higher and wider protrusion.
Coccoliths: Base and protrusion elongate elliptical; protrusion has double-lipped form, especially in LM. Cycle of irregular laths covers proximal face of central area.

Biology & life-cycles

Combination coccospheres with Sphaerocalyptra quadridentata have been illustrated by Kamptner (1941) and Triantaphyllou & Dimiza (2003) and Dimiza et al. 2008. Probert et al. (2007) give detailed description of cytology, coccolith structure and formation and culture observations.

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

See also: Sphaerocalyptra quadridentata - likely holococcolith phase;

Search data:
LITHS: planolith, elliptical, CA: ca_disjunct, grill, process,
CSPH: equant, monomorphic, CROSS-POLARS: V-prominent,
Lith size: 1.5->4.5µm; Coccosphere size: 7->12µm; Liths per sphere: 69->90
Data source notes: RCC
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: present in the plankton (Young et al. 2003)
First occurrence (base): within Pliocene Epoch (2.59-5.33Ma, base in Zanclean stage). Data source: [JRY rough estimate]

Plot of occurrence data:


Bernard, F. & Lecal, J. (1960). Plancton unicellulaire récolté dans l'océan Indien par le Charcot (1950) et le Norsel (1955-56). Bulletin de l'Institut Océanographique Monaco. 57(11-Mar): 1-59. gs

Cros, L. & Fortuño, J. -M. (2002). Atlas of northwestern Mediterranean coccolithophores. Scientia Marina. 66: 1-186. gs

Dimiza, M. D., Triantaphyllou, M. V. & Dermitzakis, M. D. (2008). Seasonality and ecology of living coccolithophores in Eastern Mediterranean coastal environments (Andros Island, Middle Aegean Sea). Micropaleontology. 54(2): 159-175. gs

Kamptner, E. (1941). Die Coccolithineen der Südwestküste von Istrien. Annalen des Naturhistorischen Museums in Wien. 51: 54-149. gs O

Kleijne, A. (1992). Extant Rhabdosphaeraceae (coccolithophorids, class Prymnesiophyceae) from the Indian Ocean, Red Sea, Mediterranean Sea and North Atlantic Ocean. Scripta Geologica. 100: 1-63. gs

Konno, S. & Jordan, R. W. (2006). Lagoon coccolithophorids from the Republic of Palau, NW Equatorial Pacific. Journal of Nannoplankton Research. 28(2): 95-110. gs O

Lohmann, H. (1902). Die Coccolithophoridae, eine Monographie der Coccolithen bildenden Flagellaten, zugleich ein Beitrag zur Kenntnis des Mittelmeerauftriebs. Archiv für Protistenkunde. 1: 89-165. gs O

Malinverno, E., Leoni , B. & Galli, P. (2022). Coccolithophore assemblages and a new species of Alisphaera from the Faafu Atoll, Maldives, Indian Ocean. Marine Micropaleontology. 172(102110): 1-16. gs

Meier, K. J. S., Kinkel, H. & Young, J. R. (2014). A note on calcareous nannoplankton from the Kieler Förde (Baltic Sea). Journal of Nannoplankton Research. 33(1): 29-37. gs

Norris, R. E. (1984). Indian Ocean nanoplankton. I. Rhabdosphaeraceae (Prymnesiophyceae) with a review of extant taxa. Journal of Phycology. 20: 27-41. gs

Probert, I., Fresnel, J., Billard, C., Geisen, M. & Young, J. R. (2007). Light and electron microscope observations of Algirosphaera robusta (Pymnesiophyceae). Journal of Phycology. 43: 319-332. gs

Reid, F. M. H. (1980). Coccolithophorids of the North Pacific Central Gyre with notes on their vertical and seasonal distribution. Micropaleontology. 26(2): 151-176. gs

Samtleben, C. et al. (1995). Plankton in the Norwegian-Greenland Sea: from living communities to sediment assemblages - an actualistic approach. Geologische Rundschau. 84: 108-136. gs

Schiller, J. (1914). Bericht über Ergebnisse der Nannoplanktonuntersuchungen anlässlich der Kreuzungen S.M.S. Najade in der Adria. Internationale Revue für die gesamte Hydrobiologie. 6: 1-15. gs

Schlauder, J. (1945). Recherches sur les flagellés calcaires de la Baie d'Alger. PhD thesis, Université d'Alger. 1-51. gs

Thomsen, H. A. (2016). Baltic Sea coccolithophores – an overview of insights into their taxonomy and ecology from the last 40 years. Journal of Nannoplankton Research. 36(2): 97-119. gs O

Winter, A., Reiss, Z. & Luz, B. (1979). Distribution of living coccolithophore assemblages in the Gulf of Elat ('Aqaba). Marine Micropaleontology. 4: 197-223. gs

Yang, T. -N., Wei, K. & Wu, J. -T. (2012). Marine coccolithophores around Taiwan. Biodiversity Research Center, Academica Sinica, Taipei. 1-96. 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


Algirosphaera robusta compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-2-2024

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