Most (but not all) dinoflagellates have a dinokaryon, described below (see: Life cycle, below). Dinoflagellates with a dinokaryon are classified under Dinokaryota, while dinoflagellates without a dinokaryon are classified under Syndiniales.
most (but noT alL) dinOflagelLAtes have a DinokARyON, dEscrIBeD below (SeE: lIfe cycle, bElOw). dinoFlAgeLlaTEs with a DinOKaryoN Are classIfieD undeR DinoKaryOTa, whILE DiNoFlageLlatEs wiThOUt A dinokaryon aRe cLassifiED under SynDiniAles.