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Authority

(Manton, J. Sutherl. & Oates) H.A. Thomsen et al. (1991b: 640-641, figs 5-7, 10).

Order

Coccolithophorales

Class

Haptophyceae

Family

Papposphaeraceae

Additional References

N/A

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Synonyms

(original name of HET phase): Papposphaera sarion H.A.Thomsen (1981)

Basionym

Turrisphaera arctica Manton, J.Sutherl. & Oates (Manton et al., 1976c: 188–189, pl. 4, figs 24–34)

Description

Coccospheres spherical, c. 7 μm; coccoliths 1.5–2 μm long; central area with an axial cross; process 2–4 μm high, ending distally in 4 subparallel crystallites, each c. 1 μm long; calyx reduced to 4 subparallel rods.

Genus description: Heterococcospheres monomorphic or variable; coccoliths elliptical; outer rim elements with angular tops forming a serrated margin. Species separated mainly on central area and process structures.

Distribution

64º51'S 46º05'W, Thomsen et al. (1988)

Comments

Family Papposphaeraceae description: Diploid phase motile; coccospheres covered in pappoliths. A central process is often prominent. Each pappolith is constructed of a rim of two lath types, one small and confined to the proximal part of the wall, the other vertically expanded; central area with variable structures. Haploid phase motile, with holococcoliths typically with tower-like forms.

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