Definition of nannofossil in English:

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Pronunciation: /ˈnanəʊˌfɒs(ə)l/
Pronunciation: /ˈnanəʊˌfɒsɪl/
(also nanofossil)


The fossil of a minute planktonic organism, especially a calcareous unicellular alga.
Example sentences
  • This paper presents high-resolution data from calcareous nannofossils, planktic Foraminifera, palynomorphs and stable isotopes for the Late Albian OAE Id.
  • In the seas, the calcareous nannofossils were still in evidence but in shallow waters the benthonic nummulite and other larger foraminifera became very abundant.
  • The same samples as used for geochemistry were investigated for their content of calcareous nannofossils.


1960s: from nannoplankton (variant of nanoplankton) + fossil.

For editors and proofreaders

Line breaks: nanno|fos¦sil

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