Hernandez-Becerril D.U., Bravo-Sierra E., Ceballos-Corona J.G.A., Esqueda-Lara K., Escobar-Morales S. and Parra-Toriz D. 2010. Morphology and taxonomy of the marine planktonic dinoflagellate Centrodinium pulchrum Bohm (Dinophyta) from the tropical Mexican Pacific, with comments on the taxonomy and distribution of the genus Centrodinium. Phycologia 49: 461–470. DOI: 10.2216/09-80.1 Centrodinium pulchrum Bohm, a rather large thecate dinoflagellate, has been found in samples from the tropical Mexican Pacific and studied in detail by light microscopy and scanning electron microscopy to define its morphological variation and tabulation. General morphological features, previously found in other members of the genus, were also found in this species: the cell body is biconical and laterally compressed with two extensions; the cingulum is median, descending and lacking lists; the theca is hyaline; and chloroplasts are present. The plate formula, which can be extended to the genus Centrodinium, is interpre...