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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Citation: Chrysochromulina tenuispina Manton 1978Taxonomic rank: speciesType sample (& lithostrat): Resolute Bay, Cornwallis Island Oat. 74° 40' N., long. 95° 00' W) at 10 and 20m depth, sea temperature -I°C between Aug. 17 and 22, 1973.Farinacci catalog page (& compiler): n/a Current citation: Chrysochromulina tenuispina Manton 1978
Original Description Protoplast globose to anisodiametric, c. 8-13 µm when dry but probably up to 50% larger alive, with two equal flagella, each up to 30 µm long and a haptonema somewhat though not much shorter. Periplast scales large, flat, and of two kinds, evenly distributed and respectively with and without centrally attached, rigid, slender spines each up to 3 µm long × 0.05-0.1 µm thick, bluntly pointed. Both scale-types with narrow patternless rims but the base plates of spines a little smaller and more circular than the spineless plates. The latter commonly 1.3 × 1.6 µm. Surface patterning similar in both scale-types, the proximal faces dominated by radial ridges arranged in quadrants and the distal faces by a few, well separated, spiral threads coiled in an anticlockwise direction if seen from above and interpreted centripetally. This direction continuing up every spine to give a twist of about 21⁄2 turns along its length. Both scale faces exhibiting traces of other components located between the surfaces of the scale. Etymology: Latin adjective - slenderly spined
References:
Manton, I. (1978). Chrysochromulina tenuispina sp. nov. from Arctic Canada. British Phycological Journal. 13: 227-234. gs
Chrysochromulina tenuispina: Catalog entry compiled by Jeremy Young. Viewed: 17-2-2025