Nanoflagellates of East Pacific coastal waters: Morphology, taxonomy, and biogeography of weakly calcified coccolithophorids (Prymnesiophyceae)

A transmission electronmicroscopical examination of whole mounts of cells prepared from samples collected off central California, September 1989, from the Sea of Cortez, (Mexico), January 1990, and from San Juan Islands, Washington, August 1983, has led to the identification of 7 taxa of weakly calcified nanoflagellates, the majority of which are related to forms which have their main distribution in polar regions.