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 piriformis (Pavsic in Khan et al., 1975) Aubry, 1999
Compiled data
Khan, M. R., Pavlovec, R. & Pavsic, J. (1975). Eocene microfossils from Podgrad. Geologija. 18: 9-60. gsReferences:

![]() |
Rhabdosphaera piriformis: Catalog entry compiled by Anna Farinacci. Viewed: 11-6-2026
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=52574 Go to Archive.is to create a permanent copy of this page - citation notes |