Dalella
Damassadinium
Danea
Dapcodinium
Dapsilidinium
Daveya
Deflagymnium
Deflandrea
Desmocysta
Diacanthum
Dichadogonyaulax
Diconodinium
Dictyopyxidia
Dictyopyxis
Dimidiadinium
Dimorphosphaera
Dinaurelia
Dingodinium
Dinogymniopsis
Dinogymnium
Dinopterygium
Dioxya
Diphasiosphaera
Diphyes
Diplotesta
Discorsia
Disphaeria
Disphaerogena
Dissiliodinium
Dissimulidinium
Distatodinium
Diversispina
Dodekovia
Doidyx
Dollidinium
Dorocysta
Downiesphaeridium
Dracodinium
Druggidium
Dubridinium
Duosphaeridium
Durotrigia