Ventral pore

In gonyaulacaleans, a pore commonly associated with the suture between the fourth and first apical plates or their homologues (A/1u) (Text-Figure 105A-C). In dinophysialeans, a pore here termed the ventral pore (and probably homologous with the ventral pore of gonyaulacaleans), but sometimes termed the apical pore, occurs on the ventral episome (Text-Figure 153B-C) or at the apex (Text-Figure 153D). Preferred synonym of adelopore. See also porichnion.