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:
Papposphaera heldalii
| 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 |
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:
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 References:

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