Nannotax3 - ntax_Farinacci - Chrysochromulina tenuisquama Nannotax3 - ntax_Farinacci - Chrysochromulina tenuisquama

CATALOG - Chrysochromulina tenuisquama


Folder trail: ntax_Farinacci -> Haptophytes -> Chrysochromulina -> Chrysochromulina tenuisquama
Folders this level: << < C. parkeae, C. parva, C. pelagica, C. planisquama, C. polylepis, C. pontica, C. pringsheimii, C. pseudolanceolata, C. pyramidosa, C. quadrikonta, C. rotalis, C. scutellum, C. simplex, C. strobilus, C. tenuispina, C. tenuisquama, C. throndsenii, C. vexillifera

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 tenuisquama Estep et al. 1984

Compiled data

Citation: Chrysochromulina tenuisquama Estep et al. 1984
Taxonomic rank: species
Type specimens: Type specimen: micrograph numbers 11112/11113 (Figs. 19-20)
Farinacci catalog page (& compiler): n/a
Current citation: Chrysochromulina tenuisquama Estep et al. 1984


Original Description

Chloroplast containing cells, 2-5 µm in diameter when dried, possibly up to twice as large when living, with two subequal flagella, 7-14 µm and 9-17 µm in length and a coiling haptonema, 3-4 times longer than the flagella. Body covered by a single, delicate scale type, slightly ovate in outline, 0.4-0.6µm x 0.5-0.8µm in size. The proximal scale face with a radial fibrillar pattern of 35-55 lines, divided into four quadrants. The distal face with an identical radial pattern, on which is superimposed an irregular circular pattern of c. 20 non-concentric lines.

Size:
cells, 2-5 µm; subequal flagella, 7-14 µm and 9-17 µm; single, delicate scale type, slightly ovate in outline, 0.4-0.6µm x 0.5-0.8µm;

Etymology:
Latin name meaning thin or delicate scales.

Extra details from original publication
Distribution : Sargasso Sea and the South Coast of Florida.

Remarks: The haptonema of this species, unlike several others in this study, is not easily lost on fixation and is only partially coiled in most speciems (Fig. 19). Plate scales adhere tightly to the cell body and are found in a field surrounding the cell body in dried specimens. In addition, they are exceptionally thin and delicate, making observation of their fine structure difficult and causing many of them to fold (Fig. 20). These scale characteristics are shared with Chrysochromulina fragilis (LEADBEATER 1972b) and Chrysochromulina « aff. fragilis » (MOESTRUP 1979). The proximal scale face exhibits a typical radial pattern divided into four quadrants (Fig. 21). The distal face has a backgroung radial pattern identical to, and possibly showing through from the proximal face. Superimposed on this radial pattern are a series of lines that appear at first to be random, but which on closer inspection can be seen to form a series of irregular, non-concentric circular or ovate lines (Fig. 21). Present at sta. 4/1 m, 6/100 m, 7/35 m, 8/35 m, 9/35 m and 10/35 & 65 m.

References:

Estep, K. W., Davis, P. G., Hargraves, P. E. & Sieburth, J. M. (1984). Chloroplast containing microflagellates in natural populations of North Atlantic nanoplankton, their identification and distribution, including a description of five new species of Chrysochromulina (Prymnesiophyceae). Protistologica. 20: 613-634. gs

Leadbeater, B. S. C. (1972). Fine structural observations on six new species of Chrysochromulina (Haptophyceae) from Norway with preliminary observations on scale production in C. microcylindra sp. nov. Sarsia. 49: 65-80. gs

Moestrup, Ø. (1979). Identification by electron microscopy of marine nanoplankton from New Zealand, including the description of four new species. New Zealand. Journal of Botany. 17: 61-95. gs


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

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