Nannotax3 - ntax_main - Papposphaera arctica Nannotax3 - ntax_main - Papposphaera arctica

Papposphaera arctica


Classification: ntax_main -> Coccolith families inc sed -> Papposphaeraceae -> Papposphaera -> Papposphaera arctica
Sister taxa: P. lepida, P. obpyramidalis, P. vexillata ⟩⟨ P. sp. type 1, P. sp. type 4, P. sp. type 5, P. sp. type 6, P. sp. type 2 ⟩⟨ P. sagittifera, P. sarion, P. arctica, P. iugifera, P. heldalii ⟩⟨ P. thomsenii, P. bourrellii, P. sp. type 3, P. sp. cf. type 3, P. sp. type 3 ⟩⟨ P. simplicissima ⟩⟨ P. sp.


Taxonomy:
Citation: Papposphaera arctica (Manton et al. 1976) Thomsen et al., 1991
Taxonomic rank: species
Basionym: Turrisphaera arctica Manton et al. 1976
Taxonomic discussion: Thomsen et al (1991) suggested that Papposphaera sarion Thomsen 1981 was the heterococcolith stage of Turrisphaera arctica Manton Sutherland & Oates 1976. However, Thomsen et al. (2016) have shown that the two species are involved, and so that P. arctica and P. sarion are closely related but discrete species.

Distinguishing features:
Parent taxon (Papposphaera): Coccolith distal rim serrated - elements pentagonal;
Coccosphere varimorphic, or dimorphic. All coccoliths have spines but CFCs typically have longer spines and larger calices.
This taxon: Central areas with axial cross
Process 2-4 µm high with small calyx of 4 radially diverging blades.

Farinacci & Howe catalog pages:
T. arctica *


Size:
Cell spherical, ca. 7 µm in diameter. Coccoliths, 1.5-2 µm long;

Biology & life-cycles
HOL = Turrisphaera arctica, see Thomsen et al. (1991)

See also: Papposphaera arctica HOL ;

Search data:
LITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, process,
CSPH: equant, CFC,
Lith size: 1.1->1.5µm; Coccosphere size: 4->7µm;
Data source notes: cell & lith size (BC diameter) from Thomsen et al. 2016
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 No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY rough estimate]

Plot of occurrence data:

References:

Manton, I., Sutherland, J. & Oates, K. (1976). Arctic coccolithophorids: two species of Turrisphaera gen. nov. from West Greenland, Alaska, and the Northwest Passage. Proceedings of the Royal Society of London. 194: 179-194. gs

Thomsen, H. A. (1981). Identification by electron microscopy of nanoplanktonic coccolithophorids (Prymnesiophyceae) from West Greenland, including the description of Papposphaera sarion sp. nov. British Phycological Journal. 16: 77-94. gs

Thomsen, H. A., Ostergaard, J. B. & Hansen, L. E. (1991). Heteromorphic life histories in Arctic coccolithophorids (Prymnesiophyceae). Journal of Phycology. 27: 634-642. gs

Thomsen, H. A., Ostergaard, J. B. & Heldal, M. (2016). Coccolithophores in Polar Waters: Papposphaera sagittifera HET and HOL revisited. Acta Protozoologica. 55: 33-50. gs

Thomsen, H. A., Heldal, M. & Ostergaard, J. B. (2016). Coccolithophores in Polar Waters: Papposphaera arctica HET and HOL revisited. Micropaleontology. 61(6): 419-427. gs

Thomsen, H. A., Heldal, M. & Ostergaard, J. B. (2016). Coccolithophores in Polar Waters: Papposphaera sarion HET and HOL revisited. Micropaleontology. 61(6): 429-438. gs

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Papposphaera arctica compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-1-2026

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