Nannotax3 - ntax_cenozoic - Papposphaera heldalii Nannotax3 - ntax_cenozoic - Papposphaera heldalii

Papposphaera heldalii


Classification: ntax_cenozoic -> Coccolith families inc sed -> Papposphaeraceae -> Papposphaera -> Papposphaera heldalii
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 heldalii Thomsen & Egge 2016
taxonomic rank: 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: BC central areas open; CFC central areas with axial cross
Process 2-4 µm high with delicate calyx of 4 radially diverging blades.

Farinacci & Howe catalog pages: P. heldalii [no catalog entry yet]

Search data:
LITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, vacant, process,
CSPH: equant, CFC,
Lith size: 0.5->1.3µm; Coccosphere size: 9->11µm;
Data source notes: csph & lith size (BC diameter) from OD
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 (Thomsen & Egge 2015)
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:

Thomsen, H. A. & Egge, J. K. (2016). Papposphaera heldalii sp. nov. (Haptophyta, Papposphaeraceae) from Svalbard. Acta Protozoologica. 55: 27-32. 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


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Papposphaera heldalii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-4-2024

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1007 Go to Archive.is to create a permanent copy of this page - citation notes
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