Nannotax3 - ntax_non_cocco - Chrysochromulina adriatica Nannotax3 - ntax_non_cocco - Chrysochromulina adriatica

Chrysochromulina adriatica

Classification: ntax_non_cocco -> Haptophytes -> Prymnesiales -> Chrysochromulinaceae -> Chrysochromulina -> affinity not established -> Chrysochromulina adriatica
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


Citation: Chrysochromulina adriatica Leadbeater 1974
Rank: Species
Basionym: Chrysochromulina adriatica Leadbeater 1974

Catalog entries: Chrysochromulina adriatica

Original description: Diagnosis. Cell subspherical, 5-8 µm long x 6-9 µm wide; two flagella 8-10 µm long and a hap- tonema 6-10 µm long when extended. Scales of two types, both plate-like. Under-layer of scales 1.8 - 2.5 µm long x 1.2 - 1.5 µm wide with a pattern of curved and sparse ridges radiating from the centre to a thickened margin on the distal surface. Outer layer of scales approximately circular 1.8 - 2.5 µm in diameter; pattern similar to that of the under-layer scales but with a patternless margin on the distal surface. 

Description. The small subspherical cell has two flagella and a slightly shorter hapto- nema (PI. VI A). The scales are of two types. The underlying scales are oval flat plates displaying an arrangement of approximately concentric ridges dominated by radiating ridges equally visible on both surfaces (PI. VIB). The outer layer of circular scales are similar in patterning and construction to the underlying oval plates (PI. VI c). The margin of the distal surface is distinguished by a flap of scale material which, in whole mounts, appears to collapse inwards on to the surface of the scale. Sections are required to deter- mine the precise relationship between the scale and margin.

Type images:

Geological Range:
Last occurrence (top): Extant. Data source:
First occurrence (base): within No known fossil record modern (0-0Ma, base in "Holocene" stage). Data source:


Leadbeater, B. S. C. (1974). Ultrastructural observations on nanoplankton collected from the coast of Jugoslavia and the Bay of Algiers. Journal of the Marine Biological Association of the United Kingdom. 54: 179-196. gs


Chrysochromulina adriatica compiled by Jeremy R. Young viewed: 30-9-2023

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