Original descriptions of taxa. For coccolithophores, and many calcispheres, these are pages from the 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 compiled by Prof A. Farinacci 1969-1989 and updated by Richard Howe 2000-2016 - see also this page.
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Current identification/main database link: Bussonius fecheri Kristan-Tollman 1988Compiled data
[lightly edited from Google Translate]
Diagnosis: A species of the genus Bussonius GOY, 1979, with the following special features: Very low coccolith, the three layers of the thin edge of which are close together. The distal row of plates is slightly thicker than the proximal row, the middle row is the thinnest. The plates in the distal position overlap only very little clockwise, they lie flat with a slight inclination towards the outside / proximal. In the quadrants one can observe 3 (-4) spaces between the oblique trabeculae.
Description: Oval coccolith with a narrow distal edge made up of three rows of plates that are clearly separated from each other on the outside, but close together. The distal row of plates, which forms the end, is made up of around 30 blocky, flat-lying plates that are slightly inclined outwards / proximally and only slightly overlap at the edges. The proximal row is formed from thinner and narrower blocky platelets, about a third to up to half more than in the most distal row, which lie side by side or are arranged slightly overlapping clockwise (viewed from the distal), like those of the distal row. The middle row consists of very thin, wide plates. The central field is large. It is spanned by a strong cross of bars, the long bars of which follow the long axis of the ellipse. The position of the short bars could not be observed closely. The fields between the bar and the outer edge are filled with 2-3 narrow, slanted slats, so that you can see 3-4 elongated spaces. On the distal side, a hollow spike rises in the middle of the cross which extends beyond the distal edge.
Size: length around 4.5 µm; Width a little over 3 µm.
Extra details from original publication
Relationships: Our species differs from the generotype B. prinsi (NOËL), which, by the way, is wrongly written by some authors as prinsii, by the lower distal edge, by the flat plates of the distal row of the outer edge, by the small number of slats in the quadrants. Our type also differs from B. leufuensis BOWN in that the plates in the distal row lie flat and do not tilt slightly towards the outside, but on the contrary are inclined downwards and lie against the middle plate ring, as well as the presence of narrow slats in the quadrants.