Always quote this reference when using dinoflagellate species data: Karin A. F. Zonneveld and Fabienne Marret. Chapter 4. Geographical distribution of organic-walled dinoflagellate cyst: An ecological overview. Page 21-166. In Fabienne Marret and Karin Zonneveld (2003) Atlas of modern organic-walled dinoflagellate cyst distribution. Review of Palaeobotany and Palynology, Volume 125, Issues 1-2, Pages 1-200