Nannotax3 - ntax_cenozoic - Pappomonas flabellifera

Pappomonas flabellifera


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

Taxonomy:

Citation: Pappomonas flabellifera Manton & Oates, 1975
Rank: Species
Variants: AACs have extended rim elements but no process (JRY - unpubl obs / see images)

Taxonomic discussion:
Manton et al. (1976) divided the species into two varieties based on the form of the blades on the process and their geographical distribution:
Thomsen & Ostergaard 2014 separated these two forms as discrete species, based on these characters and smaller size of P. borealis body coccoliths.

Distinguishing features:
Parent taxon (Pappomonas): Coccolith distal rim serrated - elements pentagonal;
Coccosphere polymorphic, processes on only some coccoliths. Calices with 2-fold symmetry
BCs without axial spine or node

This taxon: Central area with concentric rings of crystallites;
CFC process ca. 2 µm high, with long stem supporting two blades.

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


Size: Cell 4-6 µm; BCs 1-1.5 µm long


Ecology & Biogeography: Occurs in Arctic and Antarctic (Thomsen & Ostergaard 2014)

Biology & life-cycles: No combination coccospheres observed but Thomsen & Ostergaard (2014) suggest that the  holococcolith stge is most likely to be Trigonaspis minutissima, based on biogoegraphy.

See also: Trigonaspis minutissima - possible haploid phase;

Search data:
TagsLITHS: murolith, elliptical, CA: concentric-ring(s), ca_disjunct, grill, process,
CSPH: equant, CFC,
MetricsLith size: 0.65->0.85µm;
Data source notes: lith size (BC diameter) from Thomsen & Ostergaard. 2014
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:

Manton, I. & Oates, K. (1975). Fine-structural observations on Papposphaera Tangen from the Southern Hemisphere and on Pappomonas gen. nov. from South Africa and Greenland. British Phycological Journal. 10(1): 93-109. gs V O

Manton, I., Sutherland, J. & McCully, M. (1976a). Fine structural observations on coccolithophorids from South Alaska in the genera Papposphaera Tangen and Pappomonas Manton and Oates. British Phycological Journal. 11: 225-234. gs V O

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. (2016). Baltic Sea coccolithophores – an overview of insights into their taxonomy and ecology from the last 40 years. Journal of Nannoplankton Research. 36(2): 97-119. gs V O

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 flabellifera compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-9-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=991 Go to Archive.is to create a permanent copy of this page - citation notes



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