Nannotax3 - ntax_non_cocco - Chrysochromulina ahrengotii

Chrysochromulina ahrengotii


Classification: ntax_non_cocco -> Haptophytes -> Prymnesiales -> Chrysochromulinaceae -> Chrysochromulina -> affinity not established -> Chrysochromulina ahrengotii
Sister taxa: C. adriatica, C. ahrengotii, C. alifera, C. ephippium, C. pyramidosa ⟩⟨ C. cyathophora, C. megacylindra, C. microcylindra, C. pachycylindra ⟩⟨ C. apheles, C. discophora, C. elegans, C. lanceolata, C. latilepis, C. novae-zelandiae, C. orbiculata, C. pelagica, C. pontica, C. pseudolanceolata, C. quadrikonta, C. tenuispina, C. tenuisquama, C. vexillifera ⟩⟨ C. breviturrita, C. inornamenta, C. laurentiana

Taxonomy:

Citation: Chrysochromulina ahrengotii Jensen and Moestrup 1999
Rank: Species
Basionym: Chrysochromulina ahrengotii Jensen and Moestrup 1999
Synonyms:

Catalog entries: Chrysochromulina ahrengotii

Original description: Cell saddle-shaped, subspherical to rhomboid in outline, typically 5-6 µm long and 4-5 µm wide. Two yellow-green chloroplasts. Two equal flagella, 12-21 µm long. One coiling haptonema, 54-74 µm long. Two types of scales. An inner layer of plate scales, measuring 0.28-0.69 X 0.25-0.46 µm, with a pattern of sparse radiating ribs (c. 40) disappearing toward the center of the scale, and a narrow, marginal thick­ ening. Distal face of the scale with an inflexed rim, c. 0.05 µm wide, and a faint pattern of concentric fibrils. The outer layer consisting of spine scales with a diameter of 0.28-0.48 µm, spine length 0.20-0.43 µm. Spine supported by four struts, usually extending to a narrow marginal thickening. Proximal face of spine scale with c. 24 radiating ribs and a narrow marginal thickening. Distal, spine-bearing face with faint concentric fibrils.

Type images:


Morphology:


Size:

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:

References:

Jensen, M. Ø. & Moestrup, Ø. (1999). Ultrastructure of Chrysochromulina ahrengotii sp. nov. (Prymnesiophyceae), a new saddle-shaped species of Chrysochromulina from Danish coastal waters. Phycologia. 38: 195-207. gs


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Chrysochromulina ahrengotii compiled by Jeremy R. Young viewed: 30-9-2022

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