Gymnodinioid tabulation type

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A tabulation type in which the numerous amphiesmal vesicles are arranged randomly or in more than ten latitudinal series. The cingulum is a transverse depression and may contain a pattern of amphiesmal vesicles distinctive from those on the episome and hyposome. If the cingular amphiesmal vesicles show a tendency towards serial arrangement, several to numerous, latitudinal series are discerned. There is no sagittal suture. Refer to Text-Figure 9A.