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.
Taxa are sorted alphabetically for simple browsing, or you can use search boxes at the top & bottom of the page
Current identification/main database link: Blackites Hay & Towe, 1962
Compiled data
Editors' Notes
Current status: The genus was originally compared with Neogene Triquetrorhabdulus due to the presence of ‘keels' but it is now thought to represent disarticulated rhabdolith spines, hence the genus has been included in the Rhabdosphaeraceae. Bown & Newsam (2017) recombined P. inversus in Blackites, making the genus superfluous
See also: Triquetrorhabdulus inversus - type species;Wiseorhabdus - alternative name;
Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs O Wise, S. W. & Constans, R. E. (1976). Mid Eocene plankton correlations Northern Italy - Jamaica W.I. Transactions of the Gulf-Coast Association of Geological Societies. 26: 144-155. gs References:
Pseudotriquetrorhabdulus: Catalog entry compiled by Anna Farinacci. Viewed: 13-1-2025
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