Liu, H., Probert, I., Uitz, J., Claustre, H., Aris-Brosou,S., Frada, M., Not, F. and C. de Vargas (2009). Haptophyta rule the waves: Extreme oceanic biodiversity in non-calcifying prymnesiophytes explains the 19-Hex paradox. Proceedings of the National Academy of Science, doi/10.1073/pnas.0905841106.