Papposphaera arctica
Classification: ntax_cenozoic -> Coccolith families inc sed -> Papposphaeraceae -> Papposphaera -> Papposphaera arctica
Sister taxa: P. lepida ⟩⟨ P. obpyramidalis, P. simplicissima ⟩⟨ P. sagittifera, P. sarion, P. arctica, P. iugifera, P. heldalii ⟩⟨ P. bourrellii, P. thomsenii, P. sp. type 1, P. sp. type 2, P. sp. type 3, P. sp. type 4, P. sp. type 5, P. sp. type 6, P. sp.
Thomsen et al 2016 P arctica pl2-3.JPG
Thomsen et al 2016 P arctica pl1-03.JPG
Thomsen et al 2016 P arctica pl1-04.JPG
Thomsen etal 2016 Psagit fig3-Dab.JPG
MHeldal-Alge-012.JPG
MHeldal-Alge-02.JPG
Thomsen et al 2016 P arctica pl2-1.JPG
MHeldal-7.JPG
Thomsen et al 2016 P arctica pl1-01.JPG
Thomsen et al 2016 P arctica pl1-02.JPG
Thomsen et al 2016 P arctica pl1-05.JPG
Thomsen et al 2016 P arctica pl2-2.JPG
Thomsen et al 2016 P arctica pl2-4.JPG
Thomsen et al 2016 P arctica pl3-1.JPG
Thomsen et al 2016 P arctica pl3-2.JPG
Taxonomy:
Citation: Papposphaera arctica (Manton et al. 1976) Thomsen et al., 1991Rank: SpeciesBasionym: Turrisphaera arctica Manton et al. 1976Taxonomic 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: 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:
| Tags | LITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, process,
CSPH: equant, CFC, |
| Metrics | 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:
- Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
- Triangles indicate an event for which a precise placement has been suggested
- (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Papposphaera
References:
Manton, I., Sutherland, J. & Oates, K. (1976b). Arctic coccolithophorids: two species of Turrisphaera gen. nov. from West Greenland, Alaska, and the Northwest Passage. Proceedings of the Royal Society of London, Series B: Biological Sciences. 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 V O
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. (2016e). Coccolithophores in Polar Waters: Papposphaera sagittifera HET and HOL revisited. Acta Protozoologica. 55: 33-50. gs V O
Thomsen, H. A., Heldal, M. & Ostergaard, J. B. (2016c). Coccolithophores in Polar Waters: Papposphaera arctica HET and HOL revisited. Micropaleontology. 61(6): 419-427. gs
Thomsen, H. A., Heldal, M. & Ostergaard, J. B. (2016d). Coccolithophores in Polar Waters: Papposphaera sarion HET and HOL revisited. Micropaleontology. 61(6): 429-438. gs
