Pappomonas weddellensis


Classification: ntax_cenozoic -> Coccolith families inc sed -> Papposphaeraceae -> Pappomonas -> Pappomonas weddellensis
Sister taxa: P. borealis, P. flabellifera, P. garrisonii, P. weddellensis ⟩⟨ P. sp. type 1, P. sp. type 3, P. sp. type 4, P. sp. type 5, P. sp.

Taxonomy:

Citation: Pappomonas weddellensis Thomsen in Thomsen et al., 1988
Rank: Species

Distinguishing features: Central area with axial cross
CFC process ca. 2.0-2.5 µm high, with short stem supporting two large fan-like blades, one markedly larger than the other.
AACs have much reduced symmetrical central processes without a shaft and smaller distal appendages and may have baseplate calcification of 8 radial bars instead of 4.

Farinacci & Howe catalog pages: P. weddellensis *


Size: Cells 5-6 µm; BCs 1-1.5 µm long;

Search data:
TagsLITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, process,
CSPH: equant, CFC,
MetricsLith size: 1->1.5µm;
Data source notes: 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 (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:

Thomsen, H. A. & Ostergaard, J. B. (2014b). Coccolithophorids in polar waters: Pappomonas spp. revisited. Acta Protozoologica. 53: 235-256. gs V O

Thomsen, H. A., Buck, K. R., Coale, S. L., Garrison, D. L. & Gowing, M. M. (1988). Nanoplanktonic coccolithophorids (Prymnesiophyceae, Haptophyceae) from the Weddell Sea, Antarctica. Nordic Journal of Botany. 8: 419-436. 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, Special Issue. 1: 1-132. gs V O

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Pappomonas weddellensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 1-3-2021

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