Nannotax3 - ntax_non_cocco - Chrysochromulina brachycylindra

Chrysochromulina brachycylindra

Classification: ntax_non_cocco -> Haptophytes -> Prymnesiales -> Chrysochromulinaceae -> Chrysochromulina -> likely pryms -> Chrysochromulina brachycylindra
Sister taxa: C. bergenensis, C. birgeri, C. brachycylindra, C. fragilis, C. mactra, C. mantoniae, C. pringsheimii


Citation: Chrysochromulina brachycylindra Hällfors and Thomsen 1985
Rank: Species
Basionym: Chrysochromulina brachycylindra Hällfors and Thomsen 1985
Taxonomic discussion: not saddle shaped so likely in Prymnesium group (Edvardsen et al. 2011)

Catalog entries: Chrysochromulina brachycylindra

Original description: Cells subspherical, ca. 5µm, (3.9-6.7) in diameter when dry, with two flagella 8-13µm long and a coiling hapto-nema of approximately the same length. The protoplast is covered by scales of two types. Inner scales plate-like, oval, 0.9-1.5 x 0.7-1.2µm. In addition to a distinct inframarginal ridge, ca. 0.1µm inside the edge of the scale, the distal plate-scale surface only shows a faint concentric striation. The proximal surface has a distinct patterning of radial ridges (80-128 per scale) arranged in four sectors round an oblong central thickening. The scale rim is slightly thickened. Outer scales cylindrical with oval base-plates (1.0-1.6 X 0.6-1.2µm). The patterning of the base-plate is similar to that of the plate-scale, with 86-144 radial ridges on the proximal side, and a faint concentric striation on the distal side. An upright concentrically striated cylinder, 0.4-0.8µm high, is attached to the margin of the base-plate.

Type images:



Ecology & Biogeography

Biology & life-cycles

Phylogenetic relations

Geological Range:
Last occurrence (top): Extant. Data source:
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:


Hällfors, S. & Thomsen, H. A. (1985). Chrysochromulina brachycylindra sp. nov. (Prymnesiophyceae) from the Finnish coastal waters. Nordic Journal of Botany. 5(5): 499-504. gs


Chrysochromulina brachycylindra compiled by Jeremy R. Young viewed: 3-12-2022

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