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Journal of Micropalaeontology An open-access journal of The Micropalaeontological Society
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Volume 25, issue 2
J. Micropalaeontol., 25, 141–151, 2006
https://doi.org/10.1144/jm.25.2.141
© Author(s) 2006. This work is distributed under
the Creative Commons Attribution 4.0 License.
J. Micropalaeontol., 25, 141–151, 2006
https://doi.org/10.1144/jm.25.2.141
© Author(s) 2006. This work is distributed under
the Creative Commons Attribution 4.0 License.

  01 Nov 2006

01 Nov 2006

Navilithus altivelum: a remarkable new genus and species of deep photic coccolithophores

Jeremy R. Young1 and Harald Andruleit2 Jeremy R. Young and Harald Andruleit
  • 1Palaeontology Department, The Natural History Museum, London SW7 5BD, UK (e-mail: )
  • 2Bundesanstalt für Geowissenschaften und Rohstoffe (Federal Institute for Geosciences and Natural Resources), Postfach 510153, 30631 Hannover, Germany (e-mail: )

Keywords: coccolithophore, extant, Indian Ocean

Abstract. A very distinctive new deep-photic coccolithophore is described from the NE Indian Ocean. The new species is trimorphic with: 200–300 body coccoliths bearing low spines attached by narrow stems to a basal narrow-rimmed placolith structure; up to 18 circum-flagellar coccoliths with tall sail-like spines; and up to 22 coccoliths with moderately elevated spines occurring both around the circum-flagellar coccoliths and antapically. These features make the coccolithophore unique and require placement in a new species and genus. The basal structure, however, shows similarities to a recently recognized group of narrow-rimmed placoliths. Hence, the new coccolithophore provides some support for this grouping as a significant addition to our understanding of coccolithophore biodiversity, and potentially an explanation for a set of anomalous molecular genetic results. In addition the new taxon provides further evidence that the deep-photic coccolithophore community is more diverse than has been assumed.

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