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.
Taxa are sorted alphabetically for simple browsing, or you can use search boxes at the top & bottom of the page
![]() | Placozygus banneri Lees 2007 = Placozygus banneri | |||
![]() | Placozygus latidecussatus Hoffmann 1970 = Helicolithus compactus |
Current identification/main database link: Placozygus Hoffman 1970
Compiled data
Hoffmann, N. (1970a). Placozygus n. gen. (Coccolithineen) aus der Oberkreide des nordlichen Mitteleuropas. Geologie, Berlin. 19: 1004-1009. gsReferences:

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Placozygus: Catalog entry compiled by Anna Farinacci. Viewed: 11-8-2026
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=50388 Go to Archive.is to create a permanent copy of this page - citation notes |