Original descriptions of taxa - also emended descriptions for a few 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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Discoaster brouweri subsp. rutellus Gartner 1967 (basionym) with less obviously asymmetric tips and which do not appear bifurcate. Gartner (1967) also states that the blades can be deflected either clockwise or anticlockwise but it is not clear whether this might simply be an effect of varying way-up of the specimens (i.e. some being seen in distal view and others in proximal view).
References:
Gartner, S. (1967a). Calcareous nannofossils from Neogene of Trinidad, Jamaica, and Gulf of Mexico. University of Kansas Paleontological Contributions, Papers. 29: 1-7. gs
Discoaster brouweri rutellus: Catalog entry compiled by Anna Farinacci. Viewed: 19-8-2026