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.

Thomsen-2014 Pappomonas-9.JPG
MHeldal-8.JPG
Thomsen-2014 Pappomonas-11.JPG
Thomsen-2014 Pappomonas-8.JPG
Thomsen 2016 baltic pl8-8.JPG
Thomsen-2014 Pappomonas-13.JPG
Thomsen-2014 Pappomonas-15.JPG
Thomsen-2014 Pappomonas-3.JPG
Thomsen-2014 Pappomonas-4.JPG
Thomsen-2014 Pappomonas-10.JPG
Thomsen-2014 Pappomonas-12.JPG
Thomsen-2014 Pappomonas-5.JPG
Thomsen-2014 Pappomonas-16.JPG
Thomsen 2016 baltic pl8-9.jpg
Thomsen-2014 Pappomonas-14.JPG
Thomsen-2014 Pappomonas-17.JPG
Thomsen-2014 Pappomonas-6.JPG
Thomsen-2014 Pappomonas-7.JPG
Young_etal_2003_Pmonas_flabellifera.JPG

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:

Pappomonas flabellifera Manton & Oates 1975 var. flabellifera -process Y-shaped, described from S. Africa. AACs have short process
Pappomonas flabellifera var. borealis Manton, Sutherland & McCully 1976 - process triangular with serrated end, described from Greenland.

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:

Tags	LITHS: murolith, elliptical, CA: concentric-ring(s), ca_disjunct, grill, process, CSPH: equant, CFC,
Metrics	Lith 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:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Pappomonas

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