Nannotax3 - ntax_cenozoic - Papposphaera sarion Nannotax3 - ntax_cenozoic - Papposphaera sarion

Papposphaera sarion


Classification: ntax_cenozoic -> Coccolith families inc sed -> Papposphaeraceae -> Papposphaera -> Papposphaera sarion
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 sarion Thomsen 1981 emend Thomsen, Heldal and Østergaard 2016
taxonomic rank: Species
Taxonomic discussion: Thomsen et al. (1991) suggested that P. sarion Thomsen 1981  was the heterococcolith stage of Turrisphaera arctica Manton Sutherland and Oates 1976. Thomsen et al. (2016), however, have shown that the heterococcolith stage of T. arctica is a discrete, although similar species. Hence both P. sarion and P. arctica are now recognised.

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 and a 1 or a few extra bars
Process 2-4 µm high ending distally in four sub-parallel crystallites, each ca. 1 µm long (no real calyx).

Farinacci & Howe catalog pages: P. sarion *

See also: Papposphaera sarion HOL ;

Search data:
LITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, grill, process,
CSPH: equant, CFC,
Lith size: 1.5->2µm; Coccosphere size: 5->7µm;
Data source notes: cpsh & 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
First occurrence (base): within no known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY 2016]

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

Norris, R. E. (1983). The family position of Papposphaera Tangen and Pappomonas Manton & Oates (Prymnesiophyceae) with records from the Indian Ocean. Phycologia. 22(2): 161-169. 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

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


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Papposphaera sarion compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-4-2024

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