Nannotax3 - ntax_Farinacci - Chrysochromulina cymbium Nannotax3 - ntax_Farinacci - Chrysochromulina cymbium

CATALOG - Chrysochromulina cymbium


Folder trail: ntax_Farinacci -> Haptophytes -> Chrysochromulina -> Chrysochromulina cymbium
Folders this level: << < C. adriatica, C. ahrengotii, C. alifera, C. andersonii, C. apheles, C. bergenensis, C. birgeri, C. brachycylindra, C. brevifilum, C. breviturrita, C. camella, C. campanulifera, C. chiton, C. chiton minuta, C. cyathophora, C. cymbium, C. discophora, C. elegans, C. ephippium, C. ericina, C. fragaria, C. fragilis, C. herdlensis, C. hirta, C. inornamenta, C. kappa, C. lanceolata, C. latilepis, C. laurentiana, C. leadbeateri, C. limonia> >>

Original descriptions of taxa. For coccolithophores, and many calcispheres, these are pages from the Farinacci & Howe Catalog of Calcareous Nannofossils. In other cases (e.g. non-calcifying haptophytes) the data is directly compiled on this site. The "Catalogue of Calcareous Nannofossils" was originally compiled by Prof A. Farinacci 1969-1989, since 2000 it has been updated and extended by Richard Howe - see The Farinacci and Howe Catalog - an Introduction.
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Current identification/main database link: Chrysochromulina cymbium Leadbeater and Manton 1969

Compiled data

Citation: Chrysochromulina cymbium Leadbeater&Manton 1969
Taxonomic rank: species
Type sample (& lithostrat): Type culture 321 in the Plymouth collection.
Type locality: inshore waters near Plymouth.
Farinacci catalog page (& compiler): n/a
Current citation: Chrysochromulina cymbium Leadbeater and Manton 1969


Original Description

Cells usually saddle shaped resembling those of C. strobilus but smaller, measuring approximately 7 µm in length and width. Two flagella c. 20 µm long. The haptonema, approximately 60 µm in length, coiled into a helix of 20-30 gyres when retracted; containing 6 microtubules internally. Scales smaller than those of C. strobilus. The cup scales, c. 0.1 µm wide - 0.15 µm deep, imperforate, with slightly oblique longitudinal striations of two different thicknesses radiating from the centre. Plate scales, c. 0.25 µm long - 0.2 µm wide similarly striated but with a row of marginal perforations.

Etymology:
cymbium, greek ~ small drinking vessel)

Extra details from original publication
The cells are approximately isodiametric but saddle-shaped, the size being 6-8 µm (Fig. 16). The long haptonema is difficult to record with light microscopy, but electron microscopy shows it to be coiled in a helix somewhat less than 1 µm wide and usually consisting of 20-30 gyres (Figs. 17-19). There are 6 microtubules in the haptonema (Fig.20) as in C. strobilus and C. camella. The scales resemble those of C. strobilus more closely than those of C. camella though the plate scales are smaller than those of either of these two species and also differently patterned (Figs. 21-24). The shallow cup shaped scales (Fig. 25) have the same parts as those of the two other species but the bowl is imperforate (Figs.23 and 24). The superficial striations on the bowl often show a slight spiral deflection and there are usually four lumps of dense material present around the base after osmic fixation (Figs. 23, 24 and 26). The dimensions of the cup scales are : 0.1 µm wide - 0.15 µm deep. The plate scales of C. cymbium differ from those of C. strobilus and C. camella in showing a single row of marginal perfora- tions. The dimensions of the plate scales are: 0.25 µm - 0.2 µm. The other details are as in Figs.21, 23, 24 and 26. We have not as yet made any observations on scale production, though for Golgi structure see Fig. 25.

References:

Leadbeater, B. S. C. & Manton, I. (1969). Chrysochromulina camella sp. nov. and C. cymbium sp. nov., two new relatives of C. strobilus Parke and Manton. Archiv für Mikrobiologie. 68: 116-132. gs


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Chrysochromulina cymbium: Catalog entry compiled by Jeremy Young. Viewed: 17-2-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=54691 Go to Archive.is to create a permanent copy of this page - citation notes
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