Cells are small to large, 2- to 12-radiate in endview, with a shallow or deep median constriction.Many species have long hollow processes on each semicell(Figs. 87 and 89; the number of processes is related to the degree of radiation pattern). The processesusually have two or more small terminal spines andoften one or more series of denticulations, spines, orverrucae along the processes and on the apex and bodyof the central axis of the semicell
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