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 pelagica Estep et al. 1984
Compiled data
Original Description
Size:
Etymology:
Extra details from original publication
Remarks: This species, whose wealth of architectural deta makes its description difficult (Fig. 8), shares some characteristics with Chrysochromulina pringsheimii. For example both species have a tightly construted scale case tha remains intact even after loss of the protoplasm (PARKE & MANTON, 1962).
Underlayer plate scales bear the typical radial pattern divided into four quadrants on the proximal face (Fig. 9). Plate scales with a short central spine, as in C. pringheimii are absent. A random pattern, often present on the distal face of Chrysochromulina scales, is here limited to the center of the scale, with a radial pattern on the rim (Fig. 10). Examination of broken scale cases suggests that underlayer plate scales overlap and are held together by more than their adherence to the cell body (Fig. 11).
Spine structure is similar to C. pringsheimii and C. hirta (MANTON 1978) in the presence of four arched struts, but the spine base structures in the present species are more complicated. In the present species, spines are distributed over the entire cell surface and bear widened spear-like tips (Fig. 12). Spine base plates are similar to underlayer plate scales but with an additional 0.2 um high, raised rim to which the spine struts attach. At high magnification, delicate random pattern is visible on the strut surface (Fig. 13). Also distinguishing this species from C. pringsheimii are the distribution of spines over the entire cell surface (Fig. 10) and the blunt, broad spine tips (Fig. 11).
Present at sta. 3/1 & 35 m, 4/1 m, 5/35 m and 6/35 100m.
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 Manton, I. (1978). Chrysochromulina hirta sp. nov., a widely distributed species with unusual spines. British Phycological Journal. 13: 3-14. gs Parke, M. & Manton, I. (1962). Studies on marine flagellates. VI. Chrysochromulina pringsheimii sp. nov. Journal of the Marine Biological Association of the United Kingdom. 42: 391-404. gsReferences:
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Chrysochromulina pelagica: Catalog entry compiled by Jeremy Young. Viewed: 17-2-2025
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