Dinophysioid tabulation type
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A tabulation type in which the plates, usually numbering eighteen or nineteen, are arranged in four latitudinal series: the apical plates (A1-A3), the epithecal plates (E1-E4), the cingular plates (C1-C4) and the hypothecal plates (H1-H4). The theca is fundamentally divisible into two lateral halves, these halves being separated by a serrated sagittal suture, which is probably homologous with the fission suture in taxa with a gonyaulacoid-peridinioid tabulation type. See also dinophysoid corticotype. Refer to Text-Figure 9E.
