References

Journal of Micropalaeontology

J. Micropalaeontol.

2041-4978

GSL Publishing

Göttingen, Germany

10.1144/jm.25.2.141

<i>Navilithus altivelum</i>: a remarkable new genus and species of deep photic coccolithophores

Young

Jeremy R.

⁰ Andruleit

Harald

Palaeontology Department, The Natural History Museum, London SW7 5BD, UK (e-mail: )

Bundesanstalt für Geowissenschaften und Rohstoffe (Federal Institute for Geosciences and Natural Resources), Postfach 510153, 30631 Hannover, Germany (e-mail: )

01 11 2006

25 2 141 151

2006

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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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